From c392401fd2ba86a3fca147688d56bcaf428a00bc Mon Sep 17 00:00:00 2001
From: Gudf <28691694+Gudf@users.noreply.github.com>
Date: Thu, 10 Jul 2025 14:32:55 +0200
Subject: [PATCH] Document main menu utils

---
 include/constants/graphics.h              |  11 +-
 include/mystery_gift.h                    |   2 +-
 include/overlay097/ov97_02237694.h        | 120 ++-
 include/overlay097/struct_ov97_02237808.h |  32 -
 include/overlay097/struct_ov97_02237AEC.h |  22 -
 src/overlay097/gba_migrator.c             |   4 +-
 src/overlay097/main_menu.c                | 137 ++--
 src/overlay097/mystery_gift_app.c         | 116 ++-
 src/overlay097/ov97_0222C174.c            | 141 ++--
 src/overlay097/ov97_02237694.c            | 919 +++++++++++-----------
 src/overlay097/wonder_cards_app.c         |  38 +-
 11 files changed, 757 insertions(+), 785 deletions(-)
 delete mode 100644 include/overlay097/struct_ov97_02237808.h
 delete mode 100644 include/overlay097/struct_ov97_02237AEC.h

diff --git a/include/constants/graphics.h b/include/constants/graphics.h
index 048f34c43c..29d4ea60c2 100644
--- a/include/constants/graphics.h
+++ b/include/constants/graphics.h
@@ -32,10 +32,12 @@ enum DSScreen {
 #define HW_BG_B_PLTT_COLOR(palette, colorIdx)  ((GXRgb *)(HW_DB_BG_PLTT + PLTT_OFFSET(palette) + colorIdx * sizeof(GXRgb)))
 #define HW_OBJ_B_PLTT_COLOR(palette, colorIdx) ((GXRgb *)(HW_DB_OBJ_PLTT + PLTT_OFFSET(palette) + colorIdx * sizeof(GXRgb)))
 
-#define MON_SPRITE_FRAME_WIDTH_TILES  10
-#define MON_SPRITE_FRAME_HEIGHT_TILES 10
-#define MON_SPRITE_FRAME_WIDTH        (MON_SPRITE_FRAME_WIDTH_TILES * TILE_WIDTH_PIXELS)
-#define MON_SPRITE_FRAME_HEIGHT       (MON_SPRITE_FRAME_HEIGHT_TILES * TILE_HEIGHT_PIXELS)
+#define MON_SPRITE_FRAME_WIDTH_TILES    10
+#define MON_SPRITE_FRAME_HEIGHT_TILES   10
+#define MON_SPRITE_FRAME_WIDTH          (MON_SPRITE_FRAME_WIDTH_TILES * TILE_WIDTH_PIXELS)
+#define MON_SPRITE_FRAME_HEIGHT         (MON_SPRITE_FRAME_HEIGHT_TILES * TILE_HEIGHT_PIXELS)
+#define MON_SPRITE_FRAME_MAX_SIZE_TILES (MON_SPRITE_FRAME_WIDTH_TILES * MON_SPRITE_FRAME_HEIGHT_TILES)
+#define MON_SPRITE_FRAME_MAX_SIZE_BYTES (TILE_SIZE_4BPP * MON_SPRITE_FRAME_MAX_SIZE_TILES)
 
 #define SHADOW_SPRITE_FRAME_WIDTH_TILES  8
 #define SHADOW_SPRITE_FRAME_HEIGHT_TILES 2
@@ -49,6 +51,7 @@ enum DSScreen {
 
 #define COLOR_BLACK       GX_RGB(0, 0, 0)
 #define COLOR_DARK_GRAY   GX_RGB(4, 4, 4)
+#define COLOR_WHITE       GX_RGB(31, 31, 31)
 #define COLOR_TRANSPARENT GX_RGB(31, 31, 16)
 
 #endif // POKEPLATINUM_CONSTANTS_GRAPHICS_H
diff --git a/include/mystery_gift.h b/include/mystery_gift.h
index 69bb3e2fb6..0006b2ce84 100644
--- a/include/mystery_gift.h
+++ b/include/mystery_gift.h
@@ -99,7 +99,7 @@ enum MysteryGiftType {
     MYST_GIFT_POKETCH_APP,
     MYST_GIFT_SECRET_KEY,
     MYST_GIFT_UNKNOWN,
-    MYST_GIFT_TYPE_MAX = 14,
+    MYST_GIFT_TYPE_MAX,
 };
 
 typedef struct MysteryGift {
diff --git a/include/overlay097/ov97_02237694.h b/include/overlay097/ov97_02237694.h
index 7af96d54af..97c1ef5b47 100644
--- a/include/overlay097/ov97_02237694.h
+++ b/include/overlay097/ov97_02237694.h
@@ -2,49 +2,97 @@
 #define POKEPLATINUM_OV97_02237694_H
 
 #include "overlay097/mystery_gift_app.h"
-#include "overlay097/struct_ov97_02237808.h"
-#include "overlay097/struct_ov97_02237AEC.h"
 
 #include "bg_window.h"
 #include "list_menu.h"
 #include "mystery_gift.h"
 #include "overlay_manager.h"
+#include "palette.h"
 #include "savedata.h"
+#include "screen_fade.h"
 #include "sprite.h"
+#include "sprite_resource.h"
+#include "sprite_util.h"
 
-void ov97_02237694(int heapID);
-void *ov97_022376C4(ApplicationManager *appMan, int heapID, int param2, int param3);
-void ov97_022376FC(BgConfig *bgConfig, int bgLayer, u8 param2, u32 param3, u32 param4);
-void ov97_02237784(int param0);
-void ov97_02237790(int param0, int param1, int *param2, int param3);
-void ov97_022377F0(int *param0);
-void ov97_02237808(UnkStruct_ov97_02237808 *param0, Window *param1, int param2, int param3, int param4, int param5);
-void ov97_02237858(UnkStruct_ov97_02237808 *param0, int param1, int param2, int param3);
-void ov97_02237860(UnkStruct_ov97_02237808 *param0, int param1, int param2);
-void ov97_02237868(UnkStruct_ov97_02237808 *param0, int param1, int param2);
-int ov97_0223795C(BgConfig *param0, UnkStruct_ov97_02237808 *param1, int param2, int param3, int param4);
-int ov97_02237A18(UnkStruct_ov97_02237808 *param0);
-void ov97_02237A20(void);
-BOOL ov97_02237A60(void);
-void ov97_02237A74(void);
-UnkStruct_ov97_02237AEC *ov97_02237AEC(void);
-void ov97_02237B0C(int param0, int param1, int param2, int param3, int param4, int param5);
-void ov97_02237C80(fx32 param0, fx32 param1);
-void ov97_02237CA0(void);
-void ov97_02237CAC(int param0);
-Sprite *ov97_02237D14(int param0, Sprite *param1, int param2, int param3, int param4);
-void ov97_02237DA0(void);
-u32 ov97_02237E4C(int param0);
-void ov97_02238194(BgConfig *param0, WonderCard *param1);
-void ov97_0223829C(MysteryGiftEventData *param0, WonderCard *param1, int heapID);
-void ov97_02238324(MysteryGiftEventData *param0, WonderCard *param1, int heapID);
-void ov97_022383C4(ListMenu *param0, u32 param1, u8 param2);
-void ov97_02238400(BOOL param0);
-void ov97_02238440(void);
-void ov97_0223846C(SaveData *saveData);
-int ov97_0223847C(void);
-void ov97_022384F4(void);
-void ov97_0223850C(void);
-int ov97_02238528(void);
+enum MainMenuUtilSavingState {
+    MAIN_MENU_UTIL_INIT_SAVING,
+    MAIN_MENU_UTIL_SAVING,
+    MAIN_MENU_UTIL_SAVE_SUCCESS,
+    MAIN_MENU_UTIL_SAVE_FAILURE,
+    MAIN_MENU_UTIL_SAVING_IDLE,
+};
+
+typedef struct MainMenuSpriteManager {
+    SpriteList *spriteList;
+    G2dRenderer renderer;
+    SpriteResourceCollection *resourceCollections[SPRITE_RESOURCE_MAX];
+    SpriteResource *resources[DS_SCREEN_MAX][SPRITE_RESOURCE_MAX];
+    SpriteResourcesHeader resourceHeaders[DS_SCREEN_MAX];
+    int unused_220;
+    int unused_224;
+    int unused_228;
+    int unused_22C;
+    int unused_230;
+    int unused_234;
+} MainMenuSpriteManager;
+
+typedef struct MainMenuWindow {
+    BOOL scrollable;
+    BOOL drawFrame;
+    BOOL clearBeforePrinting;
+    BOOL textRightAligned;
+    Window *window;
+    StringTemplate *strTemplate;
+    int width;
+    int height;
+    int textXOffset;
+    int textYOffset;
+    int baseTile;
+    enum BgLayer bgLayer;
+    enum Palette textPltt;
+    int textBank;
+    int frameBaseTile;
+    enum Palette framePltt;
+    enum Font font;
+    TextColor textColor;
+    u8 backgroundColorIdx;
+    int textEntryID;
+    int renderDelay;
+} MainMenuWindow;
+
+void MainMenuUtil_Init(enum HeapId heapID);
+void *MainMenuUtil_InitAppAndFadeToBlack(ApplicationManager *appMan, enum HeapId heapID, int appDataSize, enum HeapSize heapSize);
+void MainMenuUtil_InitBG(BgConfig *bgConfig, enum BgLayer bgLayer, u8 screenSize, u32 screenBase, u32 charBase);
+void MainMenuUtil_SetFadeToWhite(BOOL enable);
+void MainMenuUtil_StartScreenFadeToState(enum FadeType fadeType, int destState, int *state, int waitState);
+void MainMenuUtil_CheckScreenFadeDone(int *state);
+void MainMenuUtil_InitWindow(MainMenuWindow *mainMenuWindow, Window *window, enum Palette textPalette, enum TextBank textBank, int baseTile, enum Palette framePalette);
+void MainMenuWindow_SetDimensionsAndBasetile(MainMenuWindow *window, int width, int height, int baseTile);
+void MainMenuWindow_SetScrollableAndFont(MainMenuWindow *window, BOOL scrollable, enum Font font);
+void MainMenuWindow_SetTextOffsets(MainMenuWindow *window, int xOffset, int yOffset);
+int MainMenuUtil_ShowWindowAtPos(BgConfig *param0, MainMenuWindow *window, int xPos, int yPos, int textEntryID);
+int MainMenuWindow_GetSize(MainMenuWindow *window);
+void MainMenuUtil_InitCharPlttTransferBuffers(void);
+BOOL MainMenuUtil_CheckSpriteLoaderInit(void);
+void MainMenuUtil_InitSpriteLoader(void);
+MainMenuSpriteManager *MainMenuUtil_GetSpriteManager(void);
+void MainMenuUtil_LoadSprite(enum NarcID narcID, int tilesID, int plttID, int cellID, int animID, enum DSScreen screen);
+void MainMenuUtil_SetSubScreenViewRect(fx32 x, fx32 y);
+void MainMenuUtil_UpdateSpritesSkipGift(void);
+void MainMenuUtil_UpdateSprites(int skipDrawGift);
+Sprite *MainMenuUtil_InitSprite(enum DSScreen screen, Sprite *sprite, int x, int y, int animationIdx);
+void MainMenuUtil_FreeSprites(void);
+u32 MainMenuUtil_CalcMysteryGiftVersionBit(enum Version version);
+void MainMenuUtil_LoadGiftSprite(BgConfig *bgConfig, WonderCard *wonderCard);
+void MainMenuUtil_EncryptWonderCard(MysteryGiftEventData *eventData, WonderCard *wonderCard, enum HeapId heapID);
+void MainMenuUtil_DecryptReceivedWonderCard(MysteryGiftEventData *param0, WonderCard *param1, enum HeapId heapID);
+void MainMenuUtil_ListMenuCursorCB(ListMenu *param0, u32 param1, u8 param2);
+void MainMenuUtil_ToggleTerminateOnGBACartRemoved(BOOL enable);
+void MainMenuUtil_UnsetGBACartIRQFunc(void);
+void MainMenuUtil_InitSaving(SaveData *saveData);
+enum SaveResult MainMenuUtil_SaveState(void);
+void MainMenuUtil_ContinueSaving(void);
+void MainMenuUtil_CancelSave(void);
+int MainMenuUtil_GetSavingStatus(void);
 
 #endif // POKEPLATINUM_OV97_02237694_H
diff --git a/include/overlay097/struct_ov97_02237808.h b/include/overlay097/struct_ov97_02237808.h
deleted file mode 100644
index 427fad3efc..0000000000
--- a/include/overlay097/struct_ov97_02237808.h
+++ /dev/null
@@ -1,32 +0,0 @@
-#ifndef POKEPLATINUM_STRUCT_OV97_02237808_H
-#define POKEPLATINUM_STRUCT_OV97_02237808_H
-
-#include "bg_window.h"
-#include "string_template.h"
-#include "text.h"
-
-typedef struct {
-    int unk_00;
-    int unk_04;
-    int unk_08;
-    int unk_0C;
-    Window *unk_10;
-    StringTemplate *unk_14;
-    int unk_18;
-    int unk_1C;
-    int unk_20;
-    int unk_24;
-    int unk_28;
-    int unk_2C;
-    int unk_30;
-    int unk_34;
-    int unk_38;
-    int unk_3C;
-    int unk_40;
-    TextColor unk_44;
-    u8 unk_48;
-    int unk_4C;
-    int unk_50;
-} UnkStruct_ov97_02237808;
-
-#endif // POKEPLATINUM_STRUCT_OV97_02237808_H
diff --git a/include/overlay097/struct_ov97_02237AEC.h b/include/overlay097/struct_ov97_02237AEC.h
deleted file mode 100644
index 7e23fe155e..0000000000
--- a/include/overlay097/struct_ov97_02237AEC.h
+++ /dev/null
@@ -1,22 +0,0 @@
-#ifndef POKEPLATINUM_STRUCT_OV97_02237AEC_H
-#define POKEPLATINUM_STRUCT_OV97_02237AEC_H
-
-#include "sprite.h"
-#include "sprite_resource.h"
-#include "sprite_util.h"
-
-typedef struct {
-    SpriteList *unk_00;
-    G2dRenderer unk_04;
-    SpriteResourceCollection *unk_190[6];
-    SpriteResource *unk_1A8[2][6];
-    SpriteResourcesHeader unk_1D8[2];
-    int unk_220;
-    int unk_224;
-    int unk_228;
-    int unk_22C;
-    int unk_230;
-    int unk_234;
-} UnkStruct_ov97_02237AEC;
-
-#endif // POKEPLATINUM_STRUCT_OV97_02237AEC_H
diff --git a/src/overlay097/gba_migrator.c b/src/overlay097/gba_migrator.c
index b913400fe3..e09020b22c 100644
--- a/src/overlay097/gba_migrator.c
+++ b/src/overlay097/gba_migrator.c
@@ -1845,7 +1845,7 @@ static int GBAMigrator_Init(ApplicationManager *appMan, int *state)
         OS_InitTick();
     }
 
-    ov97_02238440();
+    MainMenuUtil_UnsetGBACartIRQFunc();
     Unk_ov97_0223F434 = migrator->unk_E8FC;
 
     return 1;
@@ -2196,7 +2196,7 @@ static int GBAMigrator_Exit(ApplicationManager *appMan, int *state)
     ApplicationManager_FreeData(appMan);
     Heap_Destroy(HEAP_ID_MIGRATE_FROM_GBA);
 
-    ov97_02238400(FALSE);
+    MainMenuUtil_ToggleTerminateOnGBACartRemoved(FALSE);
 
     return 1;
 }
diff --git a/src/overlay097/main_menu.c b/src/overlay097/main_menu.c
index 0a425a34fc..a2978b17be 100644
--- a/src/overlay097/main_menu.c
+++ b/src/overlay097/main_menu.c
@@ -15,7 +15,6 @@
 #include "overlay097/distribution_cartridge.h"
 #include "overlay097/ov97_02235D18.h"
 #include "overlay097/ov97_02237694.h"
-#include "overlay097/struct_ov97_02237808.h"
 #include "savedata/save_table.h"
 
 #include "bg_window.h"
@@ -234,7 +233,7 @@ typedef struct MainMenuAppData {
  * Must not set appData->optionApps[option] nor render the option and return
  * FALSE if it's not available.
  */
-typedef BOOL (*MainMenuOptionRenderFuncPtr)(MainMenuAppData *appData, enum MainMenuOption optionIdx, UnkStruct_ov97_02237808 *, int yPos);
+typedef BOOL (*MainMenuOptionRenderFuncPtr)(MainMenuAppData *appData, enum MainMenuOption optionIdx, MainMenuWindow *, int yPos);
 
 typedef struct {
     enum MainMenuNextApp appToLoad;
@@ -243,13 +242,13 @@ typedef struct {
     MainMenuOptionRenderFuncPtr renderFunc; // If NULL, the option is always always available and simply shows the string indicated by textEntryID in the main menu text bank.
 } MainMenuOptionTemplate;
 
-static BOOL RenderContinueOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos);
-static BOOL RenderMysteryGiftOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos);
-static BOOL RenderRangerLinkOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos);
-static BOOL RenderGBAMigrationOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos);
-static BOOL RenderWiiConnectionOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos);
-static BOOL RenderWFCSettingsOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos);
-static BOOL RenderWiiMsgSettingsOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos);
+static BOOL RenderContinueOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos);
+static BOOL RenderMysteryGiftOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos);
+static BOOL RenderRangerLinkOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos);
+static BOOL RenderGBAMigrationOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos);
+static BOOL RenderWiiConnectionOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos);
+static BOOL RenderWFCSettingsOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos);
+static BOOL RenderWiiMsgSettingsOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos);
 
 MysteryGift *SaveData_GetMysteryGift(SaveData *saveData);
 int TrainerInfo_Size(void);
@@ -341,10 +340,10 @@ static BOOL ShowWFCUserInfoErasedMsg(MainMenuAppData *appData)
                 appData->wfcUserInfoErasedMsgPending[i] = FALSE;
                 WFCUserInfoErasedAlertTemplate *alertTemplate = &sWFCUserInfoErasedMsgWindowTemplate[i];
 
-                UnkStruct_ov97_02237808 v2;
-                ov97_02237808(&v2, &appData->wfcUserInfoErasedWindow, PLTT_0, alertTemplate->bankID, 1, PLTT_2);
-                ov97_02237858(&v2, alertTemplate->width, alertTemplate->height, ALERT_WINDOW_CONTENT_BASE_TILE);
-                ov97_0223795C(appData->bgConfig, &v2, alertTemplate->x, alertTemplate->y, alertTemplate->entryID);
+                MainMenuWindow v2;
+                MainMenuUtil_InitWindow(&v2, &appData->wfcUserInfoErasedWindow, PLTT_0, alertTemplate->bankID, 1, PLTT_2);
+                MainMenuWindow_SetDimensionsAndBasetile(&v2, alertTemplate->width, alertTemplate->height, ALERT_WINDOW_CONTENT_BASE_TILE);
+                MainMenuUtil_ShowWindowAtPos(appData->bgConfig, &v2, alertTemplate->x, alertTemplate->y, alertTemplate->entryID);
                 return TRUE;
             }
         }
@@ -403,7 +402,7 @@ static void DetectGBAGame(MainMenuAppData *appData)
 
     appData->agbGameType = GBACart_GetAGBGameType() + 1;
 
-    ov97_02238440();
+    MainMenuUtil_UnsetGBACartIRQFunc();
 }
 
 /*
@@ -492,8 +491,8 @@ static BOOL ShowAlerts(MainMenuAppData *appData)
         appData->alertsState = MAIN_MANU_ALERTS_STATE_SHOW_NEXT_ALERT;
         break;
     case MAIN_MANU_ALERTS_STATE_SHOW_NEXT_ALERT: {
-        UnkStruct_ov97_02237808 v0;
-        ov97_02237808(&v0, &appData->alertWindow, PLTT_0, TEXT_BANK_MAIN_MENU_ALERTS, 1, PLTT_2);
+        MainMenuWindow v0;
+        MainMenuUtil_InitWindow(&v0, &appData->alertWindow, PLTT_0, TEXT_BANK_MAIN_MENU_ALERTS, 1, PLTT_2);
 
         int pendingAlerts = appData->pendingAlerts & ~appData->shownAlerts;
 
@@ -517,12 +516,12 @@ static BOOL ShowAlerts(MainMenuAppData *appData)
         }
 
         appData->shownAlerts |= pendingAlerts;
-        ov97_02237858(&v0, alertTemplate->width, alertTemplate->height, ALERT_WINDOW_CONTENT_BASE_TILE);
+        MainMenuWindow_SetDimensionsAndBasetile(&v0, alertTemplate->width, alertTemplate->height, ALERT_WINDOW_CONTENT_BASE_TILE);
 
-        v0.unk_2C = 1;
-        ov97_0223795C(appData->bgConfig, &v0, alertTemplate->x, alertTemplate->y, alertTemplate->textEntryID);
+        v0.bgLayer = 1;
+        MainMenuUtil_ShowWindowAtPos(appData->bgConfig, &v0, alertTemplate->x, alertTemplate->y, alertTemplate->textEntryID);
 
-        Bg_ChangeTilemapRectPalette(appData->bgConfig, BG_LAYER_MAIN_1, Window_GetXPos(v0.unk_10), Window_GetYPos(v0.unk_10), Window_GetWidth(v0.unk_10), Window_GetHeight(v0.unk_10), PLTT_0);
+        Bg_ChangeTilemapRectPalette(appData->bgConfig, BG_LAYER_MAIN_1, Window_GetXPos(v0.window), Window_GetYPos(v0.window), Window_GetWidth(v0.window), Window_GetHeight(v0.window), PLTT_0);
         GXLayers_EngineAToggleLayers(GX_PLANEMASK_BG0, FALSE);
         GXLayers_EngineAToggleLayers(GX_PLANEMASK_BG2, FALSE);
         GXLayers_EngineAToggleLayers(GX_PLANEMASK_BG1, TRUE);
@@ -604,15 +603,15 @@ static void InitMainMenuGraphics(MainMenuAppData *appData)
     GXLayers_SetBanks(&vramBanks);
     SetAllGraphicsModes(&graphicsModes);
 
-    ov97_022376FC(appData->bgConfig, 0, 2, 0xF000, 0x0);
+    MainMenuUtil_InitBG(appData->bgConfig, 0, 2, 0xF000, 0x0);
     G2_SetBG0Priority(2);
     Bg_ClearTilesRange(BG_LAYER_MAIN_0, 32, 0, HEAP_ID_MAIN_MENU);
 
-    ov97_022376FC(appData->bgConfig, 1, 1, 0xD800, 0x8000);
+    MainMenuUtil_InitBG(appData->bgConfig, 1, 1, 0xD800, 0x8000);
     G2_SetBG1Priority(1);
     Bg_ClearTilesRange(BG_LAYER_MAIN_1, 32, 0, HEAP_ID_MAIN_MENU);
 
-    ov97_022376FC(appData->bgConfig, 2, 2, 0xE000, 0x0);
+    MainMenuUtil_InitBG(appData->bgConfig, 2, 2, 0xE000, 0x0);
     G2_SetBG2Priority(0);
     Bg_ClearTilesRange(BG_LAYER_MAIN_2, 32, 0, HEAP_ID_MAIN_MENU);
 
@@ -631,14 +630,14 @@ static void InitMainMenuGraphics(MainMenuAppData *appData)
 
 static void LoadScrollArrowsSprites(MainMenuAppData *appData)
 {
-    ov97_02237A20();
-    ov97_02237A74();
-    ov97_02237B0C(NARC_INDEX_GRAPHIC__MYSTERY, 43, 40, 42, 41, 0);
+    MainMenuUtil_InitCharPlttTransferBuffers();
+    MainMenuUtil_InitSpriteLoader();
+    MainMenuUtil_LoadSprite(NARC_INDEX_GRAPHIC__MYSTERY, 43, 40, 42, 41, 0);
 
-    appData->scrollUpArrowSprite = ov97_02237D14(0, appData->scrollUpArrowSprite, HW_LCD_WIDTH / 2, SCROLL_ARROWS_OFFSET, 0);
+    appData->scrollUpArrowSprite = MainMenuUtil_InitSprite(0, appData->scrollUpArrowSprite, HW_LCD_WIDTH / 2, SCROLL_ARROWS_OFFSET, 0);
     Sprite_SetDrawFlag(appData->scrollUpArrowSprite, FALSE);
 
-    appData->scrollDownArrowSprite = ov97_02237D14(0, appData->scrollDownArrowSprite, HW_LCD_WIDTH / 2, HW_LCD_HEIGHT - SCROLL_ARROWS_OFFSET, 1);
+    appData->scrollDownArrowSprite = MainMenuUtil_InitSprite(0, appData->scrollDownArrowSprite, HW_LCD_WIDTH / 2, HW_LCD_HEIGHT - SCROLL_ARROWS_OFFSET, 1);
     Sprite_SetDrawFlag(appData->scrollDownArrowSprite, FALSE);
 }
 
@@ -719,7 +718,7 @@ static void SetTemplateNumberCustomFormatting(StringTemplate *strTemplate, int n
     StringTemplate_SetNumber(strTemplate, 0, number, maxDigits, paddingMode, CHARSET_MODE_EN);
 }
 
-static BOOL RenderContinueOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos)
+static BOOL RenderContinueOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos)
 {
     StringTemplate *strTemplate; // Forward-declaration required to match.
 
@@ -733,7 +732,7 @@ static BOOL RenderContinueOption(MainMenuAppData *appData, enum MainMenuOption o
         textColor = TEXT_COLOR(7, 8, 15);
     }
 
-    ov97_0223795C(appData->bgConfig, param2, 3, yPos, sOptions[option].textEntryID);
+    MainMenuUtil_ShowWindowAtPos(appData->bgConfig, param2, 3, yPos, sOptions[option].textEntryID);
 
     // Index 0 has the "Continue" string, which is printed separately
     for (int i = 1; i < NELEMS(sContinueOptionStringsIDs); i++) {
@@ -742,26 +741,26 @@ static BOOL RenderContinueOption(MainMenuAppData *appData, enum MainMenuOption o
         }
 
         Strbuf *strBuf = MessageUtil_ExpandedStrbuf(strTemplate, msgLoader, sContinueOptionStringsIDs[i], HEAP_ID_MAIN_MENU);
-        Text_AddPrinterWithParamsAndColor(param2->unk_10, FONT_SYSTEM, strBuf, CONTINUE_WINDOW_MARGIN, TEXT_LINES(i), TEXT_SPEED_NO_TRANSFER, textColor, NULL);
+        Text_AddPrinterWithParamsAndColor(param2->window, FONT_SYSTEM, strBuf, CONTINUE_WINDOW_MARGIN, TEXT_LINES(i), TEXT_SPEED_NO_TRANSFER, textColor, NULL);
         Strbuf_Free(strBuf);
     }
 
     StringTemplate_SetPlayerName(strTemplate, 0, appData->trainerInfo);
-    PrintRightAlignedWithMargin(param2->unk_10, msgLoader, strTemplate, textColor, MainMenuOptions_Text_PlayerName, TEXT_LINES(1));
+    PrintRightAlignedWithMargin(param2->window, msgLoader, strTemplate, textColor, MainMenuOptions_Text_PlayerName, TEXT_LINES(1));
 
     SetTemplateNumberCustomFormatting(strTemplate, PlayTime_GetHours(appData->playTime));
     StringTemplate_SetNumber(strTemplate, 1, PlayTime_GetMinutes(appData->playTime), 2, PADDING_MODE_ZEROES, CHARSET_MODE_EN);
-    PrintRightAlignedWithMargin(param2->unk_10, msgLoader, strTemplate, textColor, MainMenuOptions_Text_PlayTime, TEXT_LINES(2));
+    PrintRightAlignedWithMargin(param2->window, msgLoader, strTemplate, textColor, MainMenuOptions_Text_PlayTime, TEXT_LINES(2));
 
     StringTemplate_SetNumber(strTemplate, 0, appData->badgeCount, 1, PADDING_MODE_NONE, CHARSET_MODE_EN);
-    PrintRightAlignedWithMargin(param2->unk_10, msgLoader, strTemplate, textColor, MainMenuOptions_Text_BadgeCount, TEXT_LINES(3));
+    PrintRightAlignedWithMargin(param2->window, msgLoader, strTemplate, textColor, MainMenuOptions_Text_BadgeCount, TEXT_LINES(3));
 
     if (appData->pokedexObtained) {
         SetTemplateNumberCustomFormatting(strTemplate, Pokedex_CountSeen(appData->pokedex));
-        PrintRightAlignedWithMargin(param2->unk_10, msgLoader, strTemplate, textColor, MainMenuOptions_Text_SeenSpeciesCount, TEXT_LINES(4));
+        PrintRightAlignedWithMargin(param2->window, msgLoader, strTemplate, textColor, MainMenuOptions_Text_SeenSpeciesCount, TEXT_LINES(4));
     }
 
-    Window_DrawStandardFrame(param2->unk_10, FALSE, param2->unk_38, param2->unk_3C);
+    Window_DrawStandardFrame(param2->window, FALSE, param2->frameBaseTile, param2->framePltt);
 
     appData->optionApps[option] = sOptions[option].appToLoad;
 
@@ -771,7 +770,7 @@ static BOOL RenderContinueOption(MainMenuAppData *appData, enum MainMenuOption o
     return TRUE;
 }
 
-static BOOL RenderGBAMigrationOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos)
+static BOOL RenderGBAMigrationOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos)
 {
     if (appData->agbGameType == 0) {
         return FALSE;
@@ -796,7 +795,7 @@ static BOOL RenderGBAMigrationOption(MainMenuAppData *appData, enum MainMenuOpti
         break;
     }
 
-    ov97_0223795C(appData->bgConfig, param2, 3, yPos, optionTextID);
+    MainMenuUtil_ShowWindowAtPos(appData->bgConfig, param2, 3, yPos, optionTextID);
     ClearWirelessIcon(appData, OPTION_WINDOW_WIDTH, yPos);
 
     appData->optionApps[option] = sOptions[option].appToLoad;
@@ -804,7 +803,7 @@ static BOOL RenderGBAMigrationOption(MainMenuAppData *appData, enum MainMenuOpti
     return TRUE;
 }
 
-static BOOL RenderMysteryGiftOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos)
+static BOOL RenderMysteryGiftOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos)
 {
     if (appData->mysteryGiftUnlocked == FALSE) {
         if (MysteryGift_GetMysteryGiftUnlockedFlag(appData->mysteryGift) == TRUE) {
@@ -819,7 +818,7 @@ static BOOL RenderMysteryGiftOption(MainMenuAppData *appData, enum MainMenuOptio
 
         if (DistributionCartridge_ReadLength()) {
             appData->mysteryGiftUnlocked = TRUE;
-            ov97_02238400(TRUE);
+            MainMenuUtil_ToggleTerminateOnGBACartRemoved(TRUE);
         }
     }
 
@@ -830,7 +829,7 @@ static BOOL RenderMysteryGiftOption(MainMenuAppData *appData, enum MainMenuOptio
     }
 
     if (appData->mysteryGiftUnlocked == TRUE) {
-        ov97_0223795C(appData->bgConfig, param2, 3, yPos, sOptions[option].textEntryID);
+        MainMenuUtil_ShowWindowAtPos(appData->bgConfig, param2, 3, yPos, sOptions[option].textEntryID);
         ClearWirelessIcon(appData, OPTION_WINDOW_WIDTH, yPos);
 
         appData->optionApps[option] = sOptions[option].appToLoad;
@@ -843,10 +842,10 @@ static BOOL RenderMysteryGiftOption(MainMenuAppData *appData, enum MainMenuOptio
     return FALSE;
 }
 
-static BOOL RenderRangerLinkOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos)
+static BOOL RenderRangerLinkOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos)
 {
     if ((appData->rangerLinkAvailable == TRUE) && (appData->pokedexObtained == TRUE)) {
-        ov97_0223795C(appData->bgConfig, param2, 3, yPos, sOptions[option].textEntryID);
+        MainMenuUtil_ShowWindowAtPos(appData->bgConfig, param2, 3, yPos, sOptions[option].textEntryID);
         DrawWirelessIcon(appData, OPTION_WINDOW_WIDTH, yPos, WIRELESS_ICON_LOCAL);
 
         appData->optionWirelessIconTypes[option] = WIRELESS_ICON_LOCAL;
@@ -859,10 +858,10 @@ static BOOL RenderRangerLinkOption(MainMenuAppData *appData, enum MainMenuOption
     return FALSE;
 }
 
-static BOOL RenderWiiConnectionOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos)
+static BOOL RenderWiiConnectionOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos)
 {
     if (appData->wiiConnectionAvailable == TRUE) {
-        ov97_0223795C(appData->bgConfig, param2, 3, yPos, sOptions[option].textEntryID);
+        MainMenuUtil_ShowWindowAtPos(appData->bgConfig, param2, 3, yPos, sOptions[option].textEntryID);
         appData->optionWirelessIconTypes[option] = WIRELESS_ICON_LOCAL;
 
         DrawWirelessIcon(appData, OPTION_WINDOW_WIDTH, yPos, WIRELESS_ICON_LOCAL);
@@ -873,9 +872,9 @@ static BOOL RenderWiiConnectionOption(MainMenuAppData *appData, enum MainMenuOpt
     return FALSE;
 }
 
-static BOOL RenderWFCSettingsOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos)
+static BOOL RenderWFCSettingsOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos)
 {
-    ov97_0223795C(appData->bgConfig, param2, 3, yPos, sOptions[option].textEntryID);
+    MainMenuUtil_ShowWindowAtPos(appData->bgConfig, param2, 3, yPos, sOptions[option].textEntryID);
     appData->optionWirelessIconTypes[option] = WIRELESS_ICON_WIFI;
 
     DrawWirelessIcon(appData, OPTION_WINDOW_WIDTH, yPos, WIRELESS_ICON_WIFI);
@@ -884,9 +883,9 @@ static BOOL RenderWFCSettingsOption(MainMenuAppData *appData, enum MainMenuOptio
     return TRUE;
 }
 
-static BOOL RenderWiiMsgSettingsOption(MainMenuAppData *appData, enum MainMenuOption option, UnkStruct_ov97_02237808 *param2, int yPos)
+static BOOL RenderWiiMsgSettingsOption(MainMenuAppData *appData, enum MainMenuOption option, MainMenuWindow *param2, int yPos)
 {
-    ov97_0223795C(appData->bgConfig, param2, 3, yPos, sOptions[option].textEntryID);
+    MainMenuUtil_ShowWindowAtPos(appData->bgConfig, param2, 3, yPos, sOptions[option].textEntryID);
     appData->optionWirelessIconTypes[option] = WIRELESS_ICON_NONE;
 
     ClearWirelessIcon(appData, OPTION_WINDOW_WIDTH, yPos);
@@ -907,15 +906,15 @@ static BOOL RenderOptions(MainMenuAppData *appData)
     for (i = 0; i < (sizeof(sOptions) / sizeof(MainMenuOptionTemplate)); i++) {
         MainMenuOptionTemplate *option = &sOptions[i];
 
-        UnkStruct_ov97_02237808 v1;
-        ov97_02237808(&v1, &appData->optionWindows[i], PLTT_1, TEXT_BANK_MAIN_MENU_OPTIONS, 1, PLTT_2);
-        ov97_02237858(&v1, OPTION_WINDOW_WIDTH, option->height, appData->nextOptionBasetile);
+        MainMenuWindow v1;
+        MainMenuUtil_InitWindow(&v1, &appData->optionWindows[i], PLTT_1, TEXT_BANK_MAIN_MENU_OPTIONS, 1, PLTT_2);
+        MainMenuWindow_SetDimensionsAndBasetile(&v1, OPTION_WINDOW_WIDTH, option->height, appData->nextOptionBasetile);
 
         if (option->renderFunc) {
             if (appData->optionApps[i]) {
-                Window_SetXPos(v1.unk_10, 3);
-                Window_SetYPos(v1.unk_10, nextOptionY);
-                Window_DrawStandardFrame(v1.unk_10, FALSE, v1.unk_38, v1.unk_3C);
+                Window_SetXPos(v1.window, 3);
+                Window_SetYPos(v1.window, nextOptionY);
+                Window_DrawStandardFrame(v1.window, FALSE, v1.frameBaseTile, v1.framePltt);
 
                 if (appData->optionWirelessIconTypes[i]) {
                     DrawWirelessIcon(appData, OPTION_WINDOW_WIDTH, nextOptionY, appData->optionWirelessIconTypes[i]);
@@ -930,7 +929,7 @@ static BOOL RenderOptions(MainMenuAppData *appData)
                 renderedCustomRenderedOption = TRUE;
             }
         } else {
-            ov97_0223795C(appData->bgConfig, &v1, 3, nextOptionY, option->textEntryID);
+            MainMenuUtil_ShowWindowAtPos(appData->bgConfig, &v1, 3, nextOptionY, option->textEntryID);
             appData->optionApps[i] = option->appToLoad;
             nextOptionY += option->height + 2; // Add 2 to account for the window border
         }
@@ -1043,7 +1042,7 @@ static void FreeApplicationResources(ApplicationManager *appMan)
     if (appData->scrollUpArrowSprite || appData->scrollDownArrowSprite) {
         Sprite_Delete(appData->scrollUpArrowSprite);
         Sprite_Delete(appData->scrollDownArrowSprite);
-        ov97_02237DA0();
+        MainMenuUtil_FreeSprites();
     }
 
     for (int i = 0; i < NELEMS(sOptions); i++) {
@@ -1138,7 +1137,7 @@ static int MainMenu_Init(ApplicationManager *appMan, int *unused)
     appData->badgeCount = TrainerInfo_BadgeCount(appData->trainerInfo);
     appData->alertsState = MAIN_MANU_ALERTS_STATE_WAIT;
 
-    ov97_02237694(HEAP_ID_MAIN_MENU);
+    MainMenuUtil_Init(HEAP_ID_MAIN_MENU);
 
     if (!SaveData_DataExists(appData->saveData)) {
         appData->isNewGame = TRUE;
@@ -1174,13 +1173,13 @@ static int MainMenu_Main(ApplicationManager *appMan, int *state)
         if (CheckWFCUserInfoErased(appData) == FALSE) {
             *state = MAIN_MENU_STATE_CHECK_NEW_GAME_AND_GBA;
         } else {
-            ov97_02237790(FADE_TYPE_UNK_1, MAIN_MENU_STATE_WARM_WFC_USER_INFO_ERASED, state, MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION);
+            MainMenuUtil_StartScreenFadeToState(FADE_TYPE_UNK_1, MAIN_MENU_STATE_WARM_WFC_USER_INFO_ERASED, state, MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION);
             *HW_BG_A_PLTT_COLOR(PLTT_0, 0) = BACKGROUND_COLOR;
         }
         break;
     case MAIN_MENU_STATE_WARM_WFC_USER_INFO_ERASED:
         if (ShowWFCUserInfoErasedMsg(appData) == FALSE) {
-            ov97_02237790(FADE_TYPE_UNK_0, MAIN_MENU_STATE_CHECK_NEW_GAME_AND_GBA, state, MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION);
+            MainMenuUtil_StartScreenFadeToState(FADE_TYPE_UNK_0, MAIN_MENU_STATE_CHECK_NEW_GAME_AND_GBA, state, MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION);
         }
         break;
     case MAIN_MENU_STATE_CHECK_NEW_GAME_AND_GBA:
@@ -1188,7 +1187,7 @@ static int MainMenu_Main(ApplicationManager *appMan, int *state)
 
         if (appData->isNewGame == TRUE) {
             appData->nextApplication = NEXT_APP_GAME_INTRO;
-            ov97_02237790(FADE_TYPE_UNK_0, MAIN_MENU_STATE_EXIT, state, MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION);
+            MainMenuUtil_StartScreenFadeToState(FADE_TYPE_UNK_0, MAIN_MENU_STATE_EXIT, state, MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION);
         } else {
             DetectGBAGame(appData);
             *state = MAIN_MENU_STATE_LOAD_GRAPHICS;
@@ -1202,7 +1201,7 @@ static int MainMenu_Main(ApplicationManager *appMan, int *state)
 
         RenderOptions(appData);
         RenderOptionsFrames(appData, appData->focusedOption);
-        ov97_02237790(FADE_TYPE_UNK_1, MAIN_MENU_STATE_SELECT_OPTION, state, MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION);
+        MainMenuUtil_StartScreenFadeToState(FADE_TYPE_UNK_1, MAIN_MENU_STATE_SELECT_OPTION, state, MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION);
 
         *HW_BG_A_PLTT_COLOR(PLTT_0, 0) = BACKGROUND_COLOR;
         appData->wirelessCheckState = MAIN_MENU_WIRELESS_CHECK_START;
@@ -1225,7 +1224,7 @@ static int MainMenu_Main(ApplicationManager *appMan, int *state)
             } else {
                 Sound_PlayEffect(SEQ_SE_CONFIRM);
                 appData->nextApplication = NEXT_APP_TITLE_SCREEN;
-                ov97_02237784(TRUE);
+                MainMenuUtil_SetFadeToWhite(TRUE);
             }
 
             if (appData->nextApplication == NEXT_APP_GAME_INTRO) {
@@ -1234,10 +1233,10 @@ static int MainMenu_Main(ApplicationManager *appMan, int *state)
                 *state = MAIN_MENU_STATE_CONFIRM_NEW_GAME;
             } else {
                 if ((appData->nextApplication == NEXT_APP_WII_CONNECTION) || (appData->nextApplication == NEXT_APP_WFC_SETTINGS)) {
-                    ov97_02237784(TRUE);
+                    MainMenuUtil_SetFadeToWhite(TRUE);
                 }
 
-                ov97_02237790(FADE_TYPE_UNK_0, MAIN_MENU_STATE_EXIT, state, MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION);
+                MainMenuUtil_StartScreenFadeToState(FADE_TYPE_UNK_0, MAIN_MENU_STATE_EXIT, state, MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION);
             }
 
             if (appData->wirelessCheckState == MAIN_MENU_WIRELESS_CHECK_CHECK_RESULT) {
@@ -1274,7 +1273,7 @@ static int MainMenu_Main(ApplicationManager *appMan, int *state)
             if (appData->alertDismissKeys & PAD_BUTTON_B) {
                 *state = MAIN_MENU_STATE_SELECT_OPTION;
             } else {
-                ov97_02237790(FADE_TYPE_UNK_0, MAIN_MENU_STATE_EXIT, state, MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION);
+                MainMenuUtil_StartScreenFadeToState(FADE_TYPE_UNK_0, MAIN_MENU_STATE_EXIT, state, MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION);
             }
         }
         break;
@@ -1283,7 +1282,7 @@ static int MainMenu_Main(ApplicationManager *appMan, int *state)
         return TRUE;
         break;
     case MAIN_MENU_STATE_WAIT_SCREEN_TRANSITION:
-        ov97_022377F0(state);
+        MainMenuUtil_CheckScreenFadeDone(state);
         break;
     case MAIN_MENU_STATE_UNUSED_9:
         return TRUE;
@@ -1292,7 +1291,7 @@ static int MainMenu_Main(ApplicationManager *appMan, int *state)
 
     DetectWirelessConnections(appData);
     DoScrollStep(appData);
-    ov97_02237CA0();
+    MainMenuUtil_UpdateSpritesSkipGift();
 
     return FALSE;
 }
@@ -1347,7 +1346,7 @@ static BOOL MainMenu_Exit(ApplicationManager *appMan, int *unused)
     ApplicationManager_FreeData(appMan);
     Heap_Destroy(HEAP_ID_MAIN_MENU);
 
-    ov97_02238400(FALSE);
+    MainMenuUtil_ToggleTerminateOnGBACartRemoved(FALSE);
 
     return TRUE;
 }
diff --git a/src/overlay097/mystery_gift_app.c b/src/overlay097/mystery_gift_app.c
index 2f75dd1d2e..16c3934b4c 100644
--- a/src/overlay097/mystery_gift_app.c
+++ b/src/overlay097/mystery_gift_app.c
@@ -16,8 +16,6 @@
 #include "overlay097/ov97_02237694.h"
 #include "overlay097/ov97_02238534.h"
 #include "overlay097/ov97_02238D74.h"
-#include "overlay097/struct_ov97_02237808.h"
-#include "overlay097/struct_ov97_02237AEC.h"
 #include "overlay097/wonder_cards_app.h"
 #include "savedata/save_table.h"
 
@@ -216,7 +214,7 @@ typedef struct MysteryGiftAnimationManager {
     int animationStage;
     int unused_04;
     s8 blendBrightness;
-    UnkStruct_ov97_02237AEC *unk_0C;
+    MainMenuSpriteManager *unk_0C;
     SpriteResourcesHeader spriteResourcesHeaders[DS_SCREEN_MAX];
     SpriteResource *spriteResources[DS_SCREEN_MAX][SPRITE_RESOURCE_MAX];
     MysteryGiftParticle topScreenSmallParticles[NUM_MYSTERY_GIFT_PARTICLES];
@@ -299,7 +297,7 @@ StateChangeMenuOptionTemplate sConfirmReceiveGiftOptions_WirelessDistribution[]
 
 static ListMenuTemplate sMysteryGiftAppListMenuTemplate = {
     .choices = NULL,
-    .cursorCallback = ov97_022383C4,
+    .cursorCallback = MainMenuUtil_ListMenuCursorCB,
     .printCallback = NULL,
     .window = NULL,
     .count = 0,
@@ -346,7 +344,7 @@ static void FreeApplicationResources(ApplicationManager *appMan)
 {
     MysteryGiftAppData *appData = ApplicationManager_Data(appMan);
 
-    ov97_02237DA0();
+    MainMenuUtil_FreeSprites();
 
     if (appData->listMenuOptions) {
         StringList_Free(appData->listMenuOptions);
@@ -380,15 +378,15 @@ static void FreeApplicationResources(ApplicationManager *appMan)
 
 static void LoadDownloadArrowSpriteResources(MysteryGiftAppData *appData)
 {
-    ov97_02237A20();
-    ov97_02237A74();
-    ov97_02237B0C(NARC_INDEX_GRAPHIC__MYSTERY, 10, 7, 9, 8, 0);
+    MainMenuUtil_InitCharPlttTransferBuffers();
+    MainMenuUtil_InitSpriteLoader();
+    MainMenuUtil_LoadSprite(NARC_INDEX_GRAPHIC__MYSTERY, 10, 7, 9, 8, 0);
 }
 
 static void SetDownloadArrowAnim(MysteryGiftAppData *appData, int animID)
 {
     if (animID != HIDE_DOWNLOADING_ARROW) {
-        appData->dowloadArrowSprite = ov97_02237D14(0, appData->dowloadArrowSprite, HW_LCD_WIDTH / 2, 100, animID);
+        appData->dowloadArrowSprite = MainMenuUtil_InitSprite(0, appData->dowloadArrowSprite, HW_LCD_WIDTH / 2, 100, animID);
     } else {
         Sprite_SetDrawFlag(appData->dowloadArrowSprite, FALSE);
     }
@@ -478,7 +476,7 @@ static WonderCard *GetReceivedWonderCard(ApplicationManager *appMan)
     switch (appData->receptionMethod) {
     case RECEIVE_FROM_FRIEND:
         memcpy(wonderCard, ov97_0222D2B8(0, NULL, 0), sizeof(WonderCard));
-        ov97_02238324(&appData->eventData, &appData->eventData.wonderCard, HEAP_ID_MYSTERY_GIFT_APP);
+        MainMenuUtil_DecryptReceivedWonderCard(&appData->eventData, &appData->eventData.wonderCard, HEAP_ID_MYSTERY_GIFT_APP);
         break;
     case RECEIVE_FROM_LOCAL_WIRELESS:
         eventData = (MysteryGiftEventData *)appData->wirelessDistributionBuffer;
@@ -521,7 +519,7 @@ static void MainCallbackSaveGame(MysteryGiftAppData *appData)
         appData->mainCallback = NULL;
     }
 
-    int saveStatus = ov97_0223847C();
+    int saveStatus = MainMenuUtil_SaveState();
 
     if (saveStatus == SAVE_RESULT_OK || saveStatus == SAVE_RESULT_CORRUPT) {
         if (ShouldPlayAnimation(&appData->eventData.wonderCard) != TRUE) {
@@ -566,7 +564,7 @@ static void SaveReceivedGift(ApplicationManager *appMan)
         saved = MysteryGift_TrySaveWondercard(mysteryGift, wonderCard);
     }
 
-    ov97_0223846C(saveData);
+    MainMenuUtil_InitSaving(saveData);
 
     appData->cancelSave = FALSE;
     appData->mainCallback = MainCallbackSaveGame;
@@ -800,7 +798,7 @@ static enum MysteryGiftAppState ExitToWonderCardsApp(ApplicationManager *appMan)
         ov97_02230224(appData);
     }
 
-    ov97_02237790(0, MG_APP_STATE_EXIT_TO_WONDER_CARDS_APP, (int *)appData->statePtr, MG_APP_STATE_WAIT_SCREEN_TRANSITION);
+    MainMenuUtil_StartScreenFadeToState(0, MG_APP_STATE_EXIT_TO_WONDER_CARDS_APP, (int *)appData->statePtr, MG_APP_STATE_WAIT_SCREEN_TRANSITION);
     return MG_APP_KEEP_PREVIOUS_STATE;
 }
 
@@ -812,8 +810,8 @@ static enum MysteryGiftAppState ExitToTitleScreen(ApplicationManager *appMan)
         appData->unk_630 = 1;
     }
 
-    ov97_02237784(1);
-    ov97_02237790(0, MG_APP_STATE_EXIT_TO_TITLE_SCREEN, (int *)appData->statePtr, MG_APP_STATE_WAIT_SCREEN_TRANSITION);
+    MainMenuUtil_SetFadeToWhite(1);
+    MainMenuUtil_StartScreenFadeToState(0, MG_APP_STATE_EXIT_TO_TITLE_SCREEN, (int *)appData->statePtr, MG_APP_STATE_WAIT_SCREEN_TRANSITION);
 
     return MG_APP_KEEP_PREVIOUS_STATE;
 }
@@ -1078,14 +1076,14 @@ void MysteryGiftApp_ShowWiFiCommError(MysteryGiftAppData *appData)
     StringTemplate *strTemplate = StringTemplate_Default(HEAP_ID_MYSTERY_GIFT_APP);
     StringTemplate_SetNumber(strTemplate, 0, appData->wifiCommErrorCode, 5, PADDING_MODE_ZEROES, CHARSET_MODE_EN);
 
-    UnkStruct_ov97_02237808 v1;
-    ov97_02237808(&v1, &appData->wifiCommErrorWindow, PLTT_1, TEXT_BANK_UNK_0695, BASE_TILE_STANDARD_WINDOW_FRAME, PLTT_3);
-    ov97_02237858(&v1, 24, 16, 100);
-    ov97_02237860(&v1, FALSE, FONT_MESSAGE);
+    MainMenuWindow v1;
+    MainMenuUtil_InitWindow(&v1, &appData->wifiCommErrorWindow, PLTT_1, TEXT_BANK_UNK_0695, BASE_TILE_STANDARD_WINDOW_FRAME, PLTT_3);
+    MainMenuWindow_SetDimensionsAndBasetile(&v1, 24, 16, 100);
+    MainMenuWindow_SetScrollableAndFont(&v1, FALSE, FONT_MESSAGE);
 
-    v1.unk_14 = strTemplate;
+    v1.strTemplate = strTemplate;
 
-    ov97_0223795C(appData->bgConfig, &v1, 4, 4, textEntryID);
+    MainMenuUtil_ShowWindowAtPos(appData->bgConfig, &v1, 4, 4, textEntryID);
     StringTemplate_Free(strTemplate);
 }
 
@@ -1186,7 +1184,7 @@ static int MysteryGiftApp_Init(ApplicationManager *appMan, int *unused)
     if (DistributionCartridge_ReadLength()) {
         appData->receptionMethod = RECEIVE_FROM_GBA_CARTRIDGE;
         SetGBACartridgeVersion(gGameVersion);
-        ov97_02238400(TRUE);
+        MainMenuUtil_ToggleTerminateOnGBACartRemoved(TRUE);
     }
 
     appData->unk_62C = 29;
@@ -1215,18 +1213,18 @@ static void LoadParticleSpriteResources(MysteryGiftAnimationManager *animMan)
     vramType = NNS_G2D_VRAM_TYPE_2DMAIN;
     resourceID = 20000 + vramType;
 
-    animMan->spriteResources[DS_SCREEN_MAIN][SPRITE_RESOURCE_CHAR] = SpriteResourceCollection_AddTiles(animMan->unk_0C->unk_190[SPRITE_RESOURCE_CHAR], narcID, tilesID, compressed, resourceID, vramType, heapID);
-    animMan->spriteResources[DS_SCREEN_MAIN][SPRITE_RESOURCE_PLTT] = SpriteResourceCollection_AddPalette(animMan->unk_0C->unk_190[SPRITE_RESOURCE_PLTT], narcID, paletteID, FALSE, resourceID, vramType, PLTT_1, heapID);
-    animMan->spriteResources[DS_SCREEN_MAIN][SPRITE_RESOURCE_CELL] = SpriteResourceCollection_Add(animMan->unk_0C->unk_190[SPRITE_RESOURCE_CELL], narcID, cellsID, compressed, resourceID, SPRITE_RESOURCE_CELL, heapID);
-    animMan->spriteResources[DS_SCREEN_MAIN][SPRITE_RESOURCE_ANIM] = SpriteResourceCollection_Add(animMan->unk_0C->unk_190[SPRITE_RESOURCE_ANIM], narcID, animationID, compressed, resourceID, SPRITE_RESOURCE_ANIM, heapID);
+    animMan->spriteResources[DS_SCREEN_MAIN][SPRITE_RESOURCE_CHAR] = SpriteResourceCollection_AddTiles(animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_CHAR], narcID, tilesID, compressed, resourceID, vramType, heapID);
+    animMan->spriteResources[DS_SCREEN_MAIN][SPRITE_RESOURCE_PLTT] = SpriteResourceCollection_AddPalette(animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_PLTT], narcID, paletteID, FALSE, resourceID, vramType, PLTT_1, heapID);
+    animMan->spriteResources[DS_SCREEN_MAIN][SPRITE_RESOURCE_CELL] = SpriteResourceCollection_Add(animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_CELL], narcID, cellsID, compressed, resourceID, SPRITE_RESOURCE_CELL, heapID);
+    animMan->spriteResources[DS_SCREEN_MAIN][SPRITE_RESOURCE_ANIM] = SpriteResourceCollection_Add(animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_ANIM], narcID, animationID, compressed, resourceID, SPRITE_RESOURCE_ANIM, heapID);
 
     vramType = NNS_G2D_VRAM_TYPE_2DSUB;
     resourceID = 20000 + vramType;
 
-    animMan->spriteResources[DS_SCREEN_SUB][SPRITE_RESOURCE_CHAR] = SpriteResourceCollection_AddTiles(animMan->unk_0C->unk_190[SPRITE_RESOURCE_CHAR], narcID, tilesID, compressed, resourceID, vramType, heapID);
-    animMan->spriteResources[DS_SCREEN_SUB][SPRITE_RESOURCE_PLTT] = SpriteResourceCollection_AddPalette(animMan->unk_0C->unk_190[SPRITE_RESOURCE_PLTT], narcID, paletteID, FALSE, resourceID, vramType, PLTT_1, heapID);
-    animMan->spriteResources[DS_SCREEN_SUB][SPRITE_RESOURCE_CELL] = SpriteResourceCollection_Add(animMan->unk_0C->unk_190[SPRITE_RESOURCE_CELL], narcID, cellsID, compressed, resourceID, SPRITE_RESOURCE_CELL, heapID);
-    animMan->spriteResources[DS_SCREEN_SUB][SPRITE_RESOURCE_ANIM] = SpriteResourceCollection_Add(animMan->unk_0C->unk_190[SPRITE_RESOURCE_ANIM], narcID, animationID, compressed, resourceID, SPRITE_RESOURCE_ANIM, heapID);
+    animMan->spriteResources[DS_SCREEN_SUB][SPRITE_RESOURCE_CHAR] = SpriteResourceCollection_AddTiles(animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_CHAR], narcID, tilesID, compressed, resourceID, vramType, heapID);
+    animMan->spriteResources[DS_SCREEN_SUB][SPRITE_RESOURCE_PLTT] = SpriteResourceCollection_AddPalette(animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_PLTT], narcID, paletteID, FALSE, resourceID, vramType, PLTT_1, heapID);
+    animMan->spriteResources[DS_SCREEN_SUB][SPRITE_RESOURCE_CELL] = SpriteResourceCollection_Add(animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_CELL], narcID, cellsID, compressed, resourceID, SPRITE_RESOURCE_CELL, heapID);
+    animMan->spriteResources[DS_SCREEN_SUB][SPRITE_RESOURCE_ANIM] = SpriteResourceCollection_Add(animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_ANIM], narcID, animationID, compressed, resourceID, SPRITE_RESOURCE_ANIM, heapID);
 
     SpriteTransfer_RequestChar(animMan->spriteResources[DS_SCREEN_MAIN][SPRITE_RESOURCE_CHAR]);
     SpriteTransfer_RequestChar(animMan->spriteResources[DS_SCREEN_SUB][SPRITE_RESOURCE_CHAR]);
@@ -1237,13 +1235,13 @@ static void LoadParticleSpriteResources(MysteryGiftAnimationManager *animMan)
     vramType = NNS_G2D_VRAM_TYPE_2DMAIN;
     resourceID = 20000 + vramType;
 
-    SpriteResourcesHeader_Init(&animMan->spriteResourcesHeaders[DS_SCREEN_MAIN], resourceID, resourceID, resourceID, resourceID, 0xffffffff, 0xffffffff, FALSE, 0, animMan->unk_0C->unk_190[SPRITE_RESOURCE_CHAR], animMan->unk_0C->unk_190[SPRITE_RESOURCE_PLTT], animMan->unk_0C->unk_190[SPRITE_RESOURCE_CELL], animMan->unk_0C->unk_190[SPRITE_RESOURCE_ANIM], NULL, NULL);
+    SpriteResourcesHeader_Init(&animMan->spriteResourcesHeaders[DS_SCREEN_MAIN], resourceID, resourceID, resourceID, resourceID, 0xffffffff, 0xffffffff, FALSE, 0, animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_CHAR], animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_PLTT], animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_CELL], animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_ANIM], NULL, NULL);
 
     vramType = NNS_G2D_VRAM_TYPE_2DSUB;
     resourceID = 20000 + vramType;
 
     // Despite baseIndex always being 0, replacing `baseIndex + DS_SCREEN_SUB` with `DS_SCREEN_SUB` doesn't match here.
-    SpriteResourcesHeader_Init(&animMan->spriteResourcesHeaders[baseIndex + DS_SCREEN_SUB], resourceID, resourceID, resourceID, resourceID, 0xffffffff, 0xffffffff, FALSE, 0, animMan->unk_0C->unk_190[SPRITE_RESOURCE_CHAR], animMan->unk_0C->unk_190[SPRITE_RESOURCE_PLTT], animMan->unk_0C->unk_190[SPRITE_RESOURCE_CELL], animMan->unk_0C->unk_190[SPRITE_RESOURCE_ANIM], NULL, NULL);
+    SpriteResourcesHeader_Init(&animMan->spriteResourcesHeaders[baseIndex + DS_SCREEN_SUB], resourceID, resourceID, resourceID, resourceID, 0xffffffff, 0xffffffff, FALSE, 0, animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_CHAR], animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_PLTT], animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_CELL], animMan->unk_0C->resourceCollections[SPRITE_RESOURCE_ANIM], NULL, NULL);
 }
 
 static Sprite *InitParticleSprite(MysteryGiftAnimationManager *animMan, int vramType)
@@ -1256,7 +1254,7 @@ static Sprite *InitParticleSprite(MysteryGiftAnimationManager *animMan, int vram
         // 0 is the top screen, 1 is the bottom screen. Using enum variants doesn't match.
         enum DSScreen screen = (vramType == NNS_G2D_VRAM_TYPE_2DMAIN) ? 0 : 1;
 
-        template.list = animMan->unk_0C->unk_00;
+        template.list = animMan->unk_0C->spriteList;
         template.resourceData = &animMan->spriteResourcesHeaders[screen];
         template.position.z = 0;
         template.affineScale.x = FX32_ONE;
@@ -2004,7 +2002,7 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
 
     switch (*state) {
     case MG_APP_STATE_SETUP:
-        ov97_02237694(HEAP_ID_MYSTERY_GIFT_APP);
+        MainMenuUtil_Init(HEAP_ID_MYSTERY_GIFT_APP);
         appData->statePtr = state;
         *state = MG_APP_STATE_INIT_GRAPHICS;
         break;
@@ -2012,10 +2010,10 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
     case MG_APP_STATE_INIT_GRAPHICS:
         ShowAppMainMenu(appMan, appData);
         LoadDownloadArrowSpriteResources(appData);
-        ov97_02237790(1, MG_APP_STATE_WAIT_MAIN_MENU_INPUT, (int *)state, MG_APP_STATE_WAIT_SCREEN_TRANSITION);
+        MainMenuUtil_StartScreenFadeToState(1, MG_APP_STATE_WAIT_MAIN_MENU_INPUT, (int *)state, MG_APP_STATE_WAIT_SCREEN_TRANSITION);
         break;
     case MG_APP_STATE_WAIT_SCREEN_TRANSITION:
-        ov97_022377F0((int *)state);
+        MainMenuUtil_CheckScreenFadeDone((int *)state);
         break;
     case MG_APP_STATE_WAIT_MAIN_MENU_INPUT:
         ProcessStateTransitionMenuInput(appMan, state, ExitToTitleScreen);
@@ -2083,12 +2081,12 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
                 memset(animMan, 0, sizeof(MysteryGiftAnimationManager));
 
                 animMan->animationStatusPtr = &appData->animationStatus;
-                animMan->unk_0C = ov97_02237AEC();
+                animMan->unk_0C = MainMenuUtil_GetSpriteManager();
 
                 SysTask_Start((SysTaskFunc)RunMysteryGiftAnimationFrame, animMan, 5);
             }
         } else {
-            ov97_02238194(appData->bgConfig, wonderCard);
+            MainMenuUtil_LoadGiftSprite(appData->bgConfig, wonderCard);
             SaveReceivedGift(appMan);
         }
 
@@ -2101,10 +2099,10 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
         }
         break;
     case MG_APP_STATE_WAIT_LOCAL_WIRELESS_GIFT_SAVED: {
-        int saveStatus = ov97_02238528();
+        int saveStatus = MainMenuUtil_GetSavingStatus();
 
         if (saveStatus == 4) {
-            ov97_022384F4();
+            MainMenuUtil_ContinueSaving();
         }
 
         if (saveStatus == SAVE_RESULT_OK) {
@@ -2118,7 +2116,7 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
             WonderCard *wonderCard = &appData->eventData.wonderCard;
 
             if (ShouldPlayAnimation(wonderCard) == TRUE) {
-                ov97_02238194(appData->bgConfig, wonderCard);
+                MainMenuUtil_LoadGiftSprite(appData->bgConfig, wonderCard);
                 appData->animationStatus = MG_ANIMATION_STATUS_PROCEED_IMPLOSION;
             } else {
                 Sound_PlayEffect(SEQ_SE_DP_UG_020);
@@ -2219,7 +2217,7 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
         }
         break;
     case MG_APP_STATE_SAVE_GIFT_FROM_FRIEND:
-        ov97_02238194(appData->bgConfig, GetReceivedWonderCard(appMan));
+        MainMenuUtil_LoadGiftSprite(appData->bgConfig, GetReceivedWonderCard(appMan));
         CommMan_SetErrorHandling(0, 0);
         SaveReceivedGift(appMan);
         *state = MG_APP_STATE_CHECK_FRIEND_CONNECTION_STILL_VALID;
@@ -2230,7 +2228,7 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
         if (netID != 0 && CommSys_IsPlayerConnected(netID) == FALSE) {
             ov97_0222D2DC();
             appData->cancelSave = TRUE;
-            ov97_0223850C();
+            MainMenuUtil_CancelSave();
             ToggleWaitDial(appData, FALSE);
             sub_02039794();
             SetDownloadArrowAnim(appData, HIDE_DOWNLOADING_ARROW);
@@ -2238,12 +2236,12 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
             break;
         }
 
-        if (ov97_02238528() == 4) {
+        if (MainMenuUtil_GetSavingStatus() == 4) {
             CommTiming_StartSync(0x93);
             *state = MG_APP_STATE_WAIT_FRIEND_READY_TO_DISCONNECT;
             appData->delay = 120;
-        } else if (ov97_02238528() == SAVE_RESULT_CORRUPT) {
-            ov97_0223850C();
+        } else if (MainMenuUtil_GetSavingStatus() == SAVE_RESULT_CORRUPT) {
+            MainMenuUtil_CancelSave();
             appData->eventData.header.hasWonderCard = FALSE;
             ToggleWaitDial(appData, FALSE);
             *state = ShowMessageBoxIntoStateTransition(appMan, &appData->messageBox, MysteryGiftMenu_Text_ProblemWithReceivingTheGift, MG_APP_STATE_EXIT_AFTER_RECEIVING_GIFT);
@@ -2251,11 +2249,11 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
     } break;
     case MG_APP_STATE_WAIT_FRIEND_READY_TO_DISCONNECT:
         if (CommTiming_IsSyncState(0x93) == TRUE) {
-            ov97_022384F4();
+            MainMenuUtil_ContinueSaving();
             appData->delay = 10;
             *state = MG_APP_STATE_RECEIVE_FROM_FRIEND_SUCCESS;
         } else if (--appData->delay == 0) {
-            ov97_0223850C();
+            MainMenuUtil_CancelSave();
             appData->eventData.header.hasWonderCard = FALSE;
             ToggleWaitDial(appData, FALSE);
             *state = ShowMessageBoxIntoStateTransition(appMan, &appData->messageBox, MysteryGiftMenu_Text_ProblemWithReceivingTheGift, MG_APP_STATE_EXIT_AFTER_RECEIVING_GIFT);
@@ -2336,7 +2334,7 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
     case MG_APP_STATE_SHOW_RECEIVING_GIFT_MSG: {
         WonderCard *wonderCard = GetReceivedWonderCard(appMan);
 
-        ov97_02238194(appData->bgConfig, wonderCard);
+        MainMenuUtil_LoadGiftSprite(appData->bgConfig, wonderCard);
         ShowMessageBox(appMan, &appData->messageBox, MysteryGiftMenu_Text_ReceivingGiftDontTurnOff);
         SetDownloadArrowAnim(appData, 1);
         ToggleWaitDial(appData, TRUE);
@@ -2350,17 +2348,17 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
         }
         break;
     case MG_APP_STATE_WAIT_MYSTERY_GIFT_SAVED:
-        if (ov97_02238528() == 4) {
-            ov97_022384F4();
+        if (MainMenuUtil_GetSavingStatus() == 4) {
+            MainMenuUtil_ContinueSaving();
         }
 
-        if (ov97_02238528() == SAVE_RESULT_OK) {
+        if (MainMenuUtil_GetSavingStatus() == SAVE_RESULT_OK) {
             appData->delay = 1;
             ToggleWaitDial(appData, FALSE);
             SetDownloadArrowAnim(appData, HIDE_DOWNLOADING_ARROW);
             Sound_PlayEffect(SEQ_SE_DP_UG_020);
             *state = ShowMessageBoxIntoStateTransition(appMan, &appData->messageBox, MysteryGiftMenu_Text_GiftReceivedPickUpInPokeMart, MG_APP_STATE_WAIT_BEFORE_EXIT_AFTER_RECEIVING_GIFT);
-        } else if (ov97_02238528() == SAVE_RESULT_CORRUPT) {
+        } else if (MainMenuUtil_GetSavingStatus() == SAVE_RESULT_CORRUPT) {
             SetDownloadArrowAnim(appData, HIDE_DOWNLOADING_ARROW);
             appData->eventData.header.hasWonderCard = FALSE;
             *state = ShowMessageBoxIntoStateTransition(appMan, &appData->messageBox, MysteryGiftMenu_Text_ProblemWithReceivingTheGift, MG_APP_STATE_EXIT_AFTER_RECEIVING_GIFT);
@@ -2409,10 +2407,10 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
             Sound_PlayEffect(SEQ_SE_CONFIRM);
 
             if (appData->eventData.header.hasWonderCard == TRUE) {
-                ov97_02237790(0, MG_APP_STATE_SHOW_RECEIVED_WONDERCARD, (int *)appData->statePtr, MG_APP_STATE_WAIT_SCREEN_TRANSITION);
+                MainMenuUtil_StartScreenFadeToState(0, MG_APP_STATE_SHOW_RECEIVED_WONDERCARD, (int *)appData->statePtr, MG_APP_STATE_WAIT_SCREEN_TRANSITION);
             } else {
-                ov97_02237784(1);
-                ov97_02237790(0, MG_APP_STATE_RESET_SYSTEM, (int *)appData->statePtr, MG_APP_STATE_WAIT_SCREEN_TRANSITION);
+                MainMenuUtil_SetFadeToWhite(1);
+                MainMenuUtil_StartScreenFadeToState(0, MG_APP_STATE_RESET_SYSTEM, (int *)appData->statePtr, MG_APP_STATE_WAIT_SCREEN_TRANSITION);
             }
         }
         break;
@@ -2421,7 +2419,7 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
         GXLayers_EngineBToggleLayers(GX_PLANEMASK_BG0, FALSE);
         GXLayers_EngineBToggleLayers(GX_PLANEMASK_BG1, TRUE);
         WonderCardsApp_ShowWondercard(appData->bgConfig, &appData->eventData.wonderCard, HEAP_ID_MYSTERY_GIFT_APP);
-        ov97_02237790(1, MG_APP_STATE_EXIT_AFTER_RECEIVING_GIFT, (int *)appData->statePtr, MG_APP_STATE_WAIT_SCREEN_TRANSITION);
+        MainMenuUtil_StartScreenFadeToState(1, MG_APP_STATE_EXIT_AFTER_RECEIVING_GIFT, (int *)appData->statePtr, MG_APP_STATE_WAIT_SCREEN_TRANSITION);
         appData->eventData.header.hasWonderCard = FALSE; // Makes the game exit the application
         break;
     case MG_APP_STATE_RESET_SYSTEM:
@@ -2433,7 +2431,7 @@ static BOOL MysteryGiftApp_Main(ApplicationManager *appMan, enum MysteryGiftAppS
         appData->mainCallback(appData);
     }
 
-    ov97_02237CAC(appData->animationStatus);
+    MainMenuUtil_UpdateSprites(appData->animationStatus);
     return FALSE;
 }
 
@@ -2470,7 +2468,7 @@ static int MysteryGiftApp_Exit(ApplicationManager *appMan, int *unused)
         SetGBACartridgeVersion(VERSION_NONE);
     }
 
-    ov97_02238400(FALSE);
+    MainMenuUtil_ToggleTerminateOnGBACartRemoved(FALSE);
 
     return TRUE;
 }
diff --git a/src/overlay097/ov97_0222C174.c b/src/overlay097/ov97_0222C174.c
index 8709678191..74fffac3cd 100644
--- a/src/overlay097/ov97_0222C174.c
+++ b/src/overlay097/ov97_0222C174.c
@@ -10,7 +10,6 @@
 #include "overlay097/ov97_02237694.h"
 #include "overlay097/struct_ov97_02232E38.h"
 #include "overlay097/struct_ov97_022335A8.h"
-#include "overlay097/struct_ov97_02237808.h"
 #include "savedata/save_table.h"
 
 #include "bg_window.h"
@@ -352,9 +351,9 @@ typedef struct {
     Window unk_18;
     Window unk_28;
     Window unk_38;
-    UnkStruct_ov97_02237808 unk_48;
-    UnkStruct_ov97_02237808 unk_9C;
-    UnkStruct_ov97_02237808 unk_F0;
+    MainMenuWindow unk_48;
+    MainMenuWindow unk_9C;
+    MainMenuWindow unk_F0;
     int unk_144;
     int unk_148;
     int unk_14C;
@@ -529,10 +528,10 @@ static void ov97_0222C254(UnkStruct_ov97_0222C388 *param0)
     GXLayers_SetBanks(&v1);
 
     SetAllGraphicsModes(&v2);
-    ov97_022376FC(param0->unk_04, 0, 1, 0xF000, 0x0);
-    ov97_022376FC(param0->unk_04, 1, 1, 0xF800, 0x4000);
-    ov97_022376FC(param0->unk_04, 4, 1, 0x7800, 0x0);
-    ov97_022376FC(param0->unk_04, 5, 1, 0x7000, 0x4000);
+    MainMenuUtil_InitBG(param0->unk_04, 0, 1, 0xF000, 0x0);
+    MainMenuUtil_InitBG(param0->unk_04, 1, 1, 0xF800, 0x4000);
+    MainMenuUtil_InitBG(param0->unk_04, 4, 1, 0x7800, 0x0);
+    MainMenuUtil_InitBG(param0->unk_04, 5, 1, 0x7000, 0x4000);
 
     Text_ResetAllPrinters();
     Font_LoadTextPalette(0, 0 * 32, param0->heapID);
@@ -561,12 +560,12 @@ static void ov97_0222C388(UnkStruct_ov97_0222C388 *param0)
 
 static BOOL ov97_0222C404(UnkStruct_ov97_0222C388 *param0)
 {
-    UnkStruct_ov97_02237808 v0;
+    MainMenuWindow v0;
 
     if (Window_IsInUse(&param0->unk_18) == 0) {
-        ov97_02237808(&v0, &param0->unk_18, 0, 14, 1, 1);
-        ov97_02237858(&v0, 22, 16, param0->unk_144);
-        ov97_0223795C(param0->unk_04, &v0, 5, 4, 2);
+        MainMenuUtil_InitWindow(&v0, &param0->unk_18, 0, 14, 1, 1);
+        MainMenuWindow_SetDimensionsAndBasetile(&v0, 22, 16, param0->unk_144);
+        MainMenuUtil_ShowWindowAtPos(param0->unk_04, &v0, 5, 4, 2);
         return 1;
     } else {
         if (gSystem.pressedKeys & (PAD_BUTTON_A | PAD_BUTTON_B)) {
@@ -583,25 +582,25 @@ static void ov97_0222C578(UnkStruct_ov97_0222C388 *param0);
 
 static void ov97_0222C47C(UnkStruct_ov97_0222C388 *param0)
 {
-    ov97_02237808(&param0->unk_48, &param0->unk_28, 0, 421, (1 + 9), 2);
-    ov97_02237858(&param0->unk_48, 27, 4, param0->unk_144);
-    ov97_02237860(&param0->unk_48, 1, 1);
-    ov97_0223795C(param0->unk_04, &param0->unk_48, 2, 19, 70);
+    MainMenuUtil_InitWindow(&param0->unk_48, &param0->unk_28, 0, 421, (1 + 9), 2);
+    MainMenuWindow_SetDimensionsAndBasetile(&param0->unk_48, 27, 4, param0->unk_144);
+    MainMenuWindow_SetScrollableAndFont(&param0->unk_48, 1, 1);
+    MainMenuUtil_ShowWindowAtPos(param0->unk_04, &param0->unk_48, 2, 19, 70);
 
-    param0->unk_144 += ov97_02237A18(&param0->unk_48);
+    param0->unk_144 += MainMenuWindow_GetSize(&param0->unk_48);
 
-    ov97_02237808(&param0->unk_9C, &param0->unk_18, 0, 421, 1, 1);
-    ov97_02237858(&param0->unk_9C, 30, 4, param0->unk_144);
-    ov97_02237860(&param0->unk_9C, 0, 1);
-    ov97_0223795C(param0->unk_04, &param0->unk_9C, 1, 1, 11);
+    MainMenuUtil_InitWindow(&param0->unk_9C, &param0->unk_18, 0, 421, 1, 1);
+    MainMenuWindow_SetDimensionsAndBasetile(&param0->unk_9C, 30, 4, param0->unk_144);
+    MainMenuWindow_SetScrollableAndFont(&param0->unk_9C, 0, 1);
+    MainMenuUtil_ShowWindowAtPos(param0->unk_04, &param0->unk_9C, 1, 1, 11);
 
-    param0->unk_144 += ov97_02237A18(&param0->unk_9C);
+    param0->unk_144 += MainMenuWindow_GetSize(&param0->unk_9C);
 
-    ov97_02237A20();
-    ov97_02237A74();
-    ov97_02237B0C(116, 10, 7, 9, 8, 0);
+    MainMenuUtil_InitCharPlttTransferBuffers();
+    MainMenuUtil_InitSpriteLoader();
+    MainMenuUtil_LoadSprite(116, 10, 7, 9, 8, 0);
 
-    param0->unk_3170 = ov97_02237D14(0, param0->unk_3170, HW_LCD_WIDTH / 2, 76, 1);
+    param0->unk_3170 = MainMenuUtil_InitSprite(0, param0->unk_3170, HW_LCD_WIDTH / 2, 76, 1);
 
     ov97_0222C578(param0);
 }
@@ -613,19 +612,19 @@ static void ov97_0222C578(UnkStruct_ov97_0222C388 *param0)
     UnkStruct_ov97_022335A8 v5;
     StringTemplate *v6 = StringTemplate_Default(param0->heapID);
 
-    ov97_02237808(&param0->unk_F0, &param0->unk_38, 0, 421, 1, 1);
-    ov97_02237858(&param0->unk_F0, 26, 4, param0->unk_144);
-    ov97_02237860(&param0->unk_F0, 0, 1);
+    MainMenuUtil_InitWindow(&param0->unk_F0, &param0->unk_38, 0, 421, 1, 1);
+    MainMenuWindow_SetDimensionsAndBasetile(&param0->unk_F0, 26, 4, param0->unk_144);
+    MainMenuWindow_SetScrollableAndFont(&param0->unk_F0, 0, 1);
 
-    param0->unk_F0.unk_14 = v6;
+    param0->unk_F0.strTemplate = v6;
 
     StringTemplate_SetPlayerName(v6, 0, param0->unk_10);
     StringTemplate_SetNumber(v6, 1, TrainerInfo_ID_LowHalf(param0->unk_10), 5, 2, 1);
 
-    ov97_0223795C(param0->unk_04, &param0->unk_F0, 3, 13, 66);
-    param0->unk_F0.unk_08 = 0;
-    ov97_02237868(&param0->unk_F0, 0, Font_GetAttribute(FONT_SYSTEM, FONTATTR_MAX_LETTER_HEIGHT));
-    ov97_0223795C(param0->unk_04, &param0->unk_F0, -1, -1, 68);
+    MainMenuUtil_ShowWindowAtPos(param0->unk_04, &param0->unk_F0, 3, 13, 66);
+    param0->unk_F0.clearBeforePrinting = 0;
+    MainMenuWindow_SetTextOffsets(&param0->unk_F0, 0, Font_GetAttribute(FONT_SYSTEM, FONTATTR_MAX_LETTER_HEIGHT));
+    MainMenuUtil_ShowWindowAtPos(param0->unk_04, &param0->unk_F0, -1, -1, 68);
 
     OS_GetMacAddress(v4);
 
@@ -635,9 +634,9 @@ static void ov97_0222C578(UnkStruct_ov97_0222C388 *param0)
     StringTemplate_SetNumber(v6, 0, v0, 4, 2, 1);
     StringTemplate_SetNumber(v6, 1, v1, 4, 2, 1);
 
-    param0->unk_F0.unk_0C = 1;
+    param0->unk_F0.textRightAligned = 1;
 
-    ov97_0223795C(param0->unk_04, &param0->unk_F0, -1, -1, 69);
+    MainMenuUtil_ShowWindowAtPos(param0->unk_04, &param0->unk_F0, -1, -1, 69);
     StringTemplate_Free(v6);
 }
 
@@ -646,7 +645,7 @@ static void ov97_0222C688(ApplicationManager *appMan)
     int v0;
     UnkStruct_ov97_0222C388 *v1 = ApplicationManager_Data(appMan);
 
-    ov97_02237DA0();
+    MainMenuUtil_FreeSprites();
 
     if (Window_IsInUse(&v1->unk_18) == 1) {
         Window_ClearAndCopyToVRAM(&v1->unk_18);
@@ -666,7 +665,7 @@ static void ov97_0222C688(ApplicationManager *appMan)
 
 static int ov97_0222C6F8(ApplicationManager *appMan, int *param1)
 {
-    UnkStruct_ov97_0222C388 *v0 = ov97_022376C4(appMan, HEAP_ID_85, sizeof(UnkStruct_ov97_0222C388), 0x20000);
+    UnkStruct_ov97_0222C388 *v0 = MainMenuUtil_InitAppAndFadeToBlack(appMan, HEAP_ID_85, sizeof(UnkStruct_ov97_0222C388), 0x20000);
 
     v0->heapID = HEAP_ID_85;
     v0->unk_04 = BgConfig_New(v0->heapID);
@@ -675,7 +674,7 @@ static int ov97_0222C6F8(ApplicationManager *appMan, int *param1)
     v0->unk_0C = SaveData_GetPokedex(v0->saveData);
     v0->options = SaveData_GetOptions(v0->saveData);
 
-    ov97_02237694(v0->heapID);
+    MainMenuUtil_Init(v0->heapID);
 
     v0->unk_3174 = SaveData_GetMysteryGift(v0->saveData);
     v0->unk_14C = UnkEnum_ov97_0222C78C_09;
@@ -699,44 +698,44 @@ static int ov97_0222C78C(ApplicationManager *appMan, int *param1)
         ov97_0222C254(v0);
 
         if (Pokedex_IsObtained(v0->unk_0C) == FALSE) {
-            ov97_02237790(1, UnkEnum_ov97_0222C78C_01, param1, UnkEnum_ov97_0222C78C_13);
+            MainMenuUtil_StartScreenFadeToState(1, UnkEnum_ov97_0222C78C_01, param1, UnkEnum_ov97_0222C78C_13);
         } else {
             *param1 = UnkEnum_ov97_0222C78C_02;
         }
         break;
     case UnkEnum_ov97_0222C78C_01:
         if (ov97_0222C404(v0) == 0) {
-            ov97_02237784(1);
-            ov97_02237790(0, UnkEnum_ov97_0222C78C_12, param1, UnkEnum_ov97_0222C78C_13);
+            MainMenuUtil_SetFadeToWhite(1);
+            MainMenuUtil_StartScreenFadeToState(0, UnkEnum_ov97_0222C78C_12, param1, UnkEnum_ov97_0222C78C_13);
         }
         break;
     case UnkEnum_ov97_0222C78C_02:
         ov97_0222C47C(v0);
 
         if (MysteryGift_CheckFreePgtSlotExists(v0->unk_3174) == 0) {
-            v0->unk_48.unk_50 = 1;
-            v0->unk_317C = ov97_0223795C(v0->unk_04, &v0->unk_48, 2, 19, 21);
-            ov97_02237790(1, UnkEnum_ov97_0222C78C_03, param1, UnkEnum_ov97_0222C78C_13);
+            v0->unk_48.renderDelay = 1;
+            v0->unk_317C = MainMenuUtil_ShowWindowAtPos(v0->unk_04, &v0->unk_48, 2, 19, 21);
+            MainMenuUtil_StartScreenFadeToState(1, UnkEnum_ov97_0222C78C_03, param1, UnkEnum_ov97_0222C78C_13);
         } else {
             v0->unk_14C = UnkEnum_ov97_0222C78C_07;
-            ov97_02237790(1, UnkEnum_ov97_0222C78C_04, param1, UnkEnum_ov97_0222C78C_13);
+            MainMenuUtil_StartScreenFadeToState(1, UnkEnum_ov97_0222C78C_04, param1, UnkEnum_ov97_0222C78C_13);
         }
         break;
     case UnkEnum_ov97_0222C78C_03:
         if ((Text_IsPrinterActive(v0->unk_317C) == 0) && gSystem.pressedKeys & PAD_BUTTON_A) {
-            ov97_02237784(1);
-            ov97_02237790(0, UnkEnum_ov97_0222C78C_12, param1, UnkEnum_ov97_0222C78C_13);
+            MainMenuUtil_SetFadeToWhite(1);
+            MainMenuUtil_StartScreenFadeToState(0, UnkEnum_ov97_0222C78C_12, param1, UnkEnum_ov97_0222C78C_13);
         }
         break;
     case UnkEnum_ov97_0222C78C_04:
         v0->unk_150 = ov97_0222CB10(v0);
 
         if (v0->unk_150 == 5) {
-            ov97_02237784(1);
-            ov97_02237790(0, UnkEnum_ov97_0222C78C_12, param1, UnkEnum_ov97_0222C78C_13);
+            MainMenuUtil_SetFadeToWhite(1);
+            MainMenuUtil_StartScreenFadeToState(0, UnkEnum_ov97_0222C78C_12, param1, UnkEnum_ov97_0222C78C_13);
         } else if (v0->unk_150 == 4) {
-            ov97_02237784(1);
-            ov97_02237790(0, UnkEnum_ov97_0222C78C_12, param1, UnkEnum_ov97_0222C78C_13);
+            MainMenuUtil_SetFadeToWhite(1);
+            MainMenuUtil_StartScreenFadeToState(0, UnkEnum_ov97_0222C78C_12, param1, UnkEnum_ov97_0222C78C_13);
         }
         break;
     case UnkEnum_ov97_0222C78C_05:
@@ -746,12 +745,12 @@ static int ov97_0222C78C(ApplicationManager *appMan, int *param1)
         GXLayers_EngineBToggleLayers(GX_PLANEMASK_BG1, 0);
 
         WonderCardsApp_ShowWondercard(v0->unk_04, &v0->unk_3180, HEAP_ID_85);
-        ov97_02237790(1, UnkEnum_ov97_0222C78C_06, param1, UnkEnum_ov97_0222C78C_13);
+        MainMenuUtil_StartScreenFadeToState(1, UnkEnum_ov97_0222C78C_06, param1, UnkEnum_ov97_0222C78C_13);
         v0->unk_3180.eventHeader.hasWonderCard = 0;
         break;
     case UnkEnum_ov97_0222C78C_06:
         if (gSystem.pressedKeys) {
-            ov97_02237790(0, UnkEnum_ov97_0222C78C_11, param1, UnkEnum_ov97_0222C78C_13);
+            MainMenuUtil_StartScreenFadeToState(0, UnkEnum_ov97_0222C78C_11, param1, UnkEnum_ov97_0222C78C_13);
         }
         break;
     case UnkEnum_ov97_0222C78C_11:
@@ -762,11 +761,11 @@ static int ov97_0222C78C(ApplicationManager *appMan, int *param1)
         return 1;
         break;
     case UnkEnum_ov97_0222C78C_13:
-        ov97_022377F0(param1);
+        MainMenuUtil_CheckScreenFadeDone(param1);
         break;
     }
 
-    ov97_02237CA0();
+    MainMenuUtil_UpdateSpritesSkipGift();
 
     return 0;
 }
@@ -800,7 +799,7 @@ static void ov97_0222C974(UnkStruct_ov97_0222C388 *param0)
     Strbuf_ToChars((const Strbuf *)v1, v4->eventHeader.title, 36);
     Strbuf_Free(v1);
 
-    v4->eventHeader.validGames = (ov97_02237E4C(10) | ov97_02237E4C(11) | ov97_02237E4C(12));
+    v4->eventHeader.validGames = (MainMenuUtil_CalcMysteryGiftVersionBit(10) | MainMenuUtil_CalcMysteryGiftVersionBit(11) | MainMenuUtil_CalcMysteryGiftVersionBit(12));
     v4->eventHeader.id = 1;
     v4->eventHeader.unique = 0;
     v4->eventHeader.unk_4E_1 = 0;
@@ -826,7 +825,7 @@ static void ov97_0222C974(UnkStruct_ov97_0222C388 *param0)
     MysteryGift_TrySavePgt(param0->unk_3174, &v4->pgt, 3);
     GXLayers_EngineBToggleLayers(GX_PLANEMASK_BG0, 0);
 
-    ov97_02238194(param0->unk_04, v4);
+    MainMenuUtil_LoadGiftSprite(param0->unk_04, v4);
 }
 
 static void ov97_0222CAAC(UnkStruct_ov97_0222C388 *param0, int param1)
@@ -921,7 +920,7 @@ int ov97_0222CB10(UnkStruct_ov97_0222C388 *param0)
         }
         break;
     case UnkEnum_ov97_0222C6F8_29:
-        ov97_0223795C(param0->unk_04, &param0->unk_48, 2, 19, 30);
+        MainMenuUtil_ShowWindowAtPos(param0->unk_04, &param0->unk_48, 2, 19, 30);
         Sprite_SetDrawFlag(param0->unk_3170, FALSE);
         DestroyWaitDial(param0->unk_34D8);
         param0->unk_34D8 = NULL;
@@ -947,7 +946,7 @@ int ov97_0222CB10(UnkStruct_ov97_0222C388 *param0)
             ov97_0223329C();
             *v3 = UnkEnum_ov97_0222C6F8_10;
             param0->unk_160 = 3200;
-            ov97_0223795C(param0->unk_04, &param0->unk_48, 2, 19, 34);
+            MainMenuUtil_ShowWindowAtPos(param0->unk_04, &param0->unk_48, 2, 19, 34);
             Sound_PlayEffect(SEQ_SE_CONFIRM);
             param0->unk_34D8 = NULL;
 
@@ -958,7 +957,7 @@ int ov97_0222CB10(UnkStruct_ov97_0222C388 *param0)
         break;
     case UnkEnum_ov97_0222C6F8_10:
         if (ov97_022332F4()) {
-            ov97_0223795C(param0->unk_04, &param0->unk_48, 2, 19, 71);
+            MainMenuUtil_ShowWindowAtPos(param0->unk_04, &param0->unk_48, 2, 19, 71);
             Sprite_SetDrawFlag(param0->unk_3170, TRUE);
             ov97_0222C578(param0);
             *v3 = UnkEnum_ov97_0222C6F8_11;
@@ -975,22 +974,22 @@ int ov97_0222CB10(UnkStruct_ov97_0222C388 *param0)
         if (ov97_02233320()) {
             *v3 = UnkEnum_ov97_0222C6F8_13;
             param0->unk_160 = 60;
-            ov97_0223795C(param0->unk_04, &param0->unk_48, 2, 19, 71);
+            MainMenuUtil_ShowWindowAtPos(param0->unk_04, &param0->unk_48, 2, 19, 71);
         }
 
         ov97_0222CAB4(param0, v3, 1, PAD_BUTTON_B);
         break;
     case UnkEnum_ov97_0222C6F8_13:
         if (--param0->unk_160 == 0) {
-            ov97_0223795C(param0->unk_04, &param0->unk_48, 2, 19, 72);
+            MainMenuUtil_ShowWindowAtPos(param0->unk_04, &param0->unk_48, 2, 19, 72);
             param0->unk_34D8 = Window_AddWaitDial(&param0->unk_28, (1 + 9));
             ov97_0222C974(param0);
-            ov97_0223846C(param0->saveData);
+            MainMenuUtil_InitSaving(param0->saveData);
             *v3 = UnkEnum_ov97_0222C6F8_14;
         }
         break;
     case UnkEnum_ov97_0222C6F8_14:
-        if (ov97_0223847C() == 1) {
+        if (MainMenuUtil_SaveState() == 1) {
             *v3 = UnkEnum_ov97_0222C6F8_15;
             param0->unk_160 = 6 + (OS_GetTickLo() % 54);
         }
@@ -1007,7 +1006,7 @@ int ov97_0222CB10(UnkStruct_ov97_0222C388 *param0)
         break;
     case UnkEnum_ov97_0222C6F8_17:
         if (ov97_0223334C()) {
-            ov97_022384F4();
+            MainMenuUtil_ContinueSaving();
 
             *v3 = UnkEnum_ov97_0222C6F8_18;
             param0->unk_160 = 800;
@@ -1027,12 +1026,12 @@ int ov97_0222CB10(UnkStruct_ov97_0222C388 *param0)
         }
         break;
     case UnkEnum_ov97_0222C6F8_18:
-        if (ov97_02238528() == 3) {
+        if (MainMenuUtil_GetSavingStatus() == 3) {
             ov97_022333BC();
             *v3 = UnkEnum_ov97_0222C6F8_22;
             param0->unk_160 = 120;
-        } else if (ov97_02238528() != 2) {
-            ov97_0223847C();
+        } else if (MainMenuUtil_GetSavingStatus() != 2) {
+            MainMenuUtil_SaveState();
         } else {
             if (ov97_02233320() || (!ov97_02233388())) {
                 *v3 = UnkEnum_ov97_0222C6F8_19;
@@ -1051,7 +1050,7 @@ int ov97_0222CB10(UnkStruct_ov97_0222C388 *param0)
         if (--param0->unk_160 == 0) {
             *v3 = UnkEnum_ov97_0222C6F8_20;
 
-            ov97_0223795C(param0->unk_04, &param0->unk_48, 2, 19, 73);
+            MainMenuUtil_ShowWindowAtPos(param0->unk_04, &param0->unk_48, 2, 19, 73);
 
             Sprite_SetDrawFlag(param0->unk_3170, FALSE);
             DestroyWaitDial(param0->unk_34D8);
@@ -1077,7 +1076,7 @@ int ov97_0222CB10(UnkStruct_ov97_0222C388 *param0)
     case UnkEnum_ov97_0222C6F8_22:
         *v3 = UnkEnum_ov97_0222C6F8_23;
     case UnkEnum_ov97_0222C6F8_23:
-        ov97_0223795C(param0->unk_04, &param0->unk_48, 2, 19, 74);
+        MainMenuUtil_ShowWindowAtPos(param0->unk_04, &param0->unk_48, 2, 19, 74);
         Sprite_SetDrawFlag(param0->unk_3170, FALSE);
 
         if (param0->unk_34D8) {
diff --git a/src/overlay097/ov97_02237694.c b/src/overlay097/ov97_02237694.c
index 6146fb3bf6..9bd3cea343 100644
--- a/src/overlay097/ov97_02237694.c
+++ b/src/overlay097/ov97_02237694.c
@@ -3,12 +3,13 @@
 #include <nitro.h>
 #include <string.h>
 
+#include "constants/forms.h"
+#include "constants/graphics.h"
+#include "constants/narc.h"
 #include "constants/species.h"
 #include "generated/items.h"
 
 #include "overlay097/mystery_gift_app.h"
-#include "overlay097/struct_ov97_02237808.h"
-#include "overlay097/struct_ov97_02237AEC.h"
 
 #include "assert.h"
 #include "bg_window.h"
@@ -41,461 +42,461 @@
 #include "text.h"
 #include "unk_020131EC.h"
 #include "unk_02033200.h"
+#include "versions.h"
 #include "vram_transfer.h"
 
-typedef struct {
-    BgConfig *unk_00;
-    BOOL unk_04;
+#define WONDER_CARD_ENCRYPTION_MAGIC 0xD679
+
+typedef struct MainMenuUtilManager MainMenuUtilManager;
+typedef void (*MainMenuUtilVBlankFuncPtr)(MainMenuUtilManager *utilMan);
+
+struct MainMenuUtilManager {
+    BgConfig *bgConfig;
+    BOOL initialized;
     int heapID;
-    int unk_0C;
-    int unk_10;
-    int unk_14;
+    int screenFadeQueuedState;
+    BOOL fadeToWhite;
+    int savingStatus;
     SaveData *saveData;
-    void *unk_1C;
-    int unk_20;
-    BOOL unk_24[4];
-    UnkStruct_ov97_02237AEC unk_34;
-    Sprite *unk_26C;
-    int unk_270;
-    fx32 unk_274;
-    u8 unk_278[3200];
-    PokemonSpriteTemplate unk_EF8;
-    void (*unk_F08)(void *param0);
-} UnkStruct_ov97_0223F550;
+    void *unused_1C;
+    int unused_20;
+    BOOL unused_24[4];
+    MainMenuSpriteManager spriteManager;
+    Sprite *mysteryGiftSprite;
+    int giftSpriteDelay;
+    fx32 bottomScreenTopY;
+    u8 monSpriteBuffer[MON_SPRITE_FRAME_MAX_SIZE_BYTES];
+    PokemonSpriteTemplate monSpriteTemplate;
+    MainMenuUtilVBlankFuncPtr onVBlank;
+};
 
-static void ov97_02237E58(void *param0);
+static void TransferGraphicsOnVBlank(void *unused);
 
-static UnkStruct_ov97_0223F550 Unk_ov97_0223F550;
+static MainMenuUtilManager sMainMenuUtilManager;
 
-void ov97_02237694(int heapID)
+void MainMenuUtil_Init(enum HeapId heapID)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    memset(v0, 0, sizeof(UnkStruct_ov97_0223F550));
+    memset(utilMan, 0, sizeof(MainMenuUtilManager));
 
-    v0->unk_04 = 1;
-    v0->heapID = heapID;
+    utilMan->initialized = TRUE;
+    utilMan->heapID = heapID;
 }
 
-void *ov97_022376C4(ApplicationManager *appMan, int heapID, int param2, int param3)
+void *MainMenuUtil_InitAppAndFadeToBlack(ApplicationManager *appMan, enum HeapId heapID, int appDataSize, enum HeapSize heapSize)
 {
-    void *v0;
+    void *newAppData;
 
-    Heap_Create(HEAP_ID_APPLICATION, heapID, param3);
-    v0 = ApplicationManager_NewData(appMan, param2, heapID);
+    Heap_Create(HEAP_ID_APPLICATION, heapID, heapSize);
+    newAppData = ApplicationManager_NewData(appMan, appDataSize, heapID);
 
-    memset(v0, 0, param2);
+    memset(newAppData, 0, appDataSize);
 
     SetScreenColorBrightness(DS_SCREEN_MAIN, FADE_TO_BLACK);
     SetScreenColorBrightness(DS_SCREEN_SUB, FADE_TO_BLACK);
 
-    return v0;
+    return newAppData;
 }
 
-void ov97_022376FC(BgConfig *bgConfig, int bgLayer, u8 param2, u32 param3, u32 param4)
+void MainMenuUtil_InitBG(BgConfig *bgConfig, enum BgLayer bgLayer, u8 screenSize, u32 screenBase, u32 charBase)
 {
     BgTemplate bgTemplate = {
-        0,
-        0,
-        0x800,
-        0,
-        1,
-        GX_BG_COLORMODE_16,
-        GX_BG_SCRBASE_0x0000,
-        GX_BG_CHARBASE_0x00000,
-        GX_BG_EXTPLTT_01,
-        0,
-        0,
-        0,
-        0
+        .x = 0,
+        .y = 0,
+        .bufferSize = 0x800,
+        .baseTile = 0,
+        .screenSize = BG_SCREEN_SIZE_256x256,
+        .colorMode = GX_BG_COLORMODE_16,
+        .screenBase = GX_BG_SCRBASE_0x0000,
+        .charBase = GX_BG_CHARBASE_0x00000,
+        .bgExtPltt = GX_BG_EXTPLTT_01,
+        .priority = 0,
+        .areaOver = 0,
+        .dummy = 0,
+        .mosaic = FALSE
     };
 
-    bgTemplate.screenSize = param2;
+    bgTemplate.screenSize = screenSize;
 
-    switch (param2) {
-    case 1:
+    switch (screenSize) {
+    case BG_SCREEN_SIZE_256x256:
         bgTemplate.bufferSize = 0x800;
         break;
-    case 2:
+    case BG_SCREEN_SIZE_256x512:
         bgTemplate.bufferSize = 0x1000;
         break;
-    case 3:
+    case BG_SCREEN_SIZE_512x256:
         bgTemplate.bufferSize = 0x1000;
         break;
-    case 4:
+    case BG_SCREEN_SIZE_512x512:
         bgTemplate.bufferSize = 0x2000;
         break;
     }
 
-    bgTemplate.screenBase = param3 / 0x800;
-    bgTemplate.charBase = param4 / 0x4000;
+    bgTemplate.screenBase = screenBase / 0x800;
+    bgTemplate.charBase = charBase / 0x4000;
 
-    Bg_InitFromTemplate(bgConfig, bgLayer, &bgTemplate, 0);
+    Bg_InitFromTemplate(bgConfig, bgLayer, &bgTemplate, BG_TYPE_STATIC);
     Bg_ClearTilemap(bgConfig, bgLayer);
 }
 
-void ov97_02237784(int param0)
+void MainMenuUtil_SetFadeToWhite(BOOL enable)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
-    v0->unk_10 = param0;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
+    utilMan->fadeToWhite = enable;
 }
 
-void ov97_02237790(int param0, int param1, int *param2, int param3)
+void MainMenuUtil_StartScreenFadeToState(enum FadeType fadeType, int destState, int *state, int waitState)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    if (v0->unk_10 == 0) {
-        StartScreenFade(FADE_BOTH_SCREENS, param0, param0, 0x0, 6, 1, v0->heapID);
+    if (utilMan->fadeToWhite == FALSE) {
+        StartScreenFade(FADE_BOTH_SCREENS, fadeType, fadeType, COLOR_BLACK, 6, 1, utilMan->heapID);
     } else {
-        StartScreenFade(FADE_BOTH_SCREENS, param0, param0, 0x7fff, 6, 1, v0->heapID);
+        StartScreenFade(FADE_BOTH_SCREENS, fadeType, fadeType, COLOR_WHITE, 6, 1, utilMan->heapID);
     }
 
-    if (param2) {
-        *param2 = param3;
+    if (state) {
+        *state = waitState;
     }
 
-    v0->unk_0C = param1;
+    utilMan->screenFadeQueuedState = destState;
 }
 
-void ov97_022377F0(int *param0)
+void MainMenuUtil_CheckScreenFadeDone(int *state)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
     if (IsScreenFadeDone()) {
-        *param0 = v0->unk_0C;
+        *state = utilMan->screenFadeQueuedState;
     }
 }
 
-void ov97_02237808(UnkStruct_ov97_02237808 *param0, Window *param1, int param2, int param3, int param4, int param5)
+void MainMenuUtil_InitWindow(MainMenuWindow *mainMenuWindow, Window *window, enum Palette textPalette, enum TextBank textBank, int baseTile, enum Palette framePalette)
 {
-    memset(param0, 0, sizeof(UnkStruct_ov97_02237808));
+    memset(mainMenuWindow, 0, sizeof(MainMenuWindow));
 
-    param0->unk_04 = 1;
-    param0->unk_08 = 1;
-    param0->unk_4C = -1;
-    param0->unk_10 = param1;
-    param0->unk_30 = param2;
-    param0->unk_34 = param3;
-    param0->unk_38 = param4;
-    param0->unk_3C = param5;
-    param0->unk_2C = 0;
-    param0->unk_40 = 0;
-    param0->unk_44 = TEXT_COLOR(1, 2, 15);
-    param0->unk_48 = 15;
-    param0->unk_00 = 0;
-    param0->unk_20 = param0->unk_24 = 0;
-    param0->unk_14 = NULL;
-    param0->unk_50 = 0xff;
+    mainMenuWindow->drawFrame = TRUE;
+    mainMenuWindow->clearBeforePrinting = TRUE;
+    mainMenuWindow->textEntryID = -1;
+    mainMenuWindow->window = window;
+    mainMenuWindow->textPltt = textPalette;
+    mainMenuWindow->textBank = textBank;
+    mainMenuWindow->frameBaseTile = baseTile;
+    mainMenuWindow->framePltt = framePalette;
+    mainMenuWindow->bgLayer = BG_LAYER_MAIN_0;
+    mainMenuWindow->font = FONT_SYSTEM;
+    mainMenuWindow->textColor = TEXT_COLOR(1, 2, 15);
+    mainMenuWindow->backgroundColorIdx = 15;
+    mainMenuWindow->scrollable = FALSE;
+    mainMenuWindow->textXOffset = mainMenuWindow->textYOffset = 0;
+    mainMenuWindow->strTemplate = NULL;
+    mainMenuWindow->renderDelay = 0xff;
 }
 
-void ov97_02237858(UnkStruct_ov97_02237808 *param0, int param1, int param2, int param3)
+void MainMenuWindow_SetDimensionsAndBasetile(MainMenuWindow *window, int width, int height, int baseTile)
 {
-    param0->unk_18 = param1;
-    param0->unk_1C = param2;
-    param0->unk_28 = param3;
+    window->width = width;
+    window->height = height;
+    window->baseTile = baseTile;
 }
 
-void ov97_02237860(UnkStruct_ov97_02237808 *param0, int param1, int param2)
+void MainMenuWindow_SetScrollableAndFont(MainMenuWindow *window, BOOL scrollable, enum Font font)
 {
-    param0->unk_00 = param1;
-    param0->unk_40 = param2;
+    window->scrollable = scrollable;
+    window->font = font;
 }
 
-void ov97_02237868(UnkStruct_ov97_02237808 *param0, int param1, int param2)
+void MainMenuWindow_SetTextOffsets(MainMenuWindow *window, int xOffset, int yOffset)
 {
-    param0->unk_20 = param1;
-    param0->unk_24 = param2;
+    window->textXOffset = xOffset;
+    window->textYOffset = yOffset;
 }
 
-static int ov97_02237870(UnkStruct_ov97_02237808 *param0, int param1)
+static int MainMenuWindow_PrintText(MainMenuWindow *window, int textEntryID)
 {
-    int v0;
-    Strbuf *v1;
-    StringTemplate *v2;
-    MessageLoader *v3;
-    UnkStruct_ov97_0223F550 *v4 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
+    int printerID;
 
-    if ((param1 != -1) && (param0->unk_4C != param1)) {
-        param0->unk_4C = param1;
+    if (textEntryID != -1 && window->textEntryID != textEntryID) {
+        window->textEntryID = textEntryID;
 
-        if (param0->unk_08 == 1) {
-            Window_FillTilemap(param0->unk_10, param0->unk_48);
+        if (window->clearBeforePrinting == TRUE) {
+            Window_FillTilemap(window->window, window->backgroundColorIdx);
         }
 
-        if (param0->unk_4C != -1) {
-            v3 = MessageLoader_Init(MESSAGE_LOADER_NARC_HANDLE, NARC_INDEX_MSGDATA__PL_MSG, param0->unk_34, v4->heapID);
+        if (window->textEntryID != -1) {
+            StringTemplate *strTemplate;
+            MessageLoader *msgLoader = MessageLoader_Init(MESSAGE_LOADER_NARC_HANDLE, NARC_INDEX_MSGDATA__PL_MSG, window->textBank, utilMan->heapID);
 
-            if (param0->unk_14 == NULL) {
-                v2 = StringTemplate_Default(v4->heapID);
+            if (window->strTemplate == NULL) {
+                strTemplate = StringTemplate_Default(utilMan->heapID);
             } else {
-                v2 = param0->unk_14;
+                strTemplate = window->strTemplate;
             }
 
-            v1 = MessageUtil_ExpandedStrbuf(v2, v3, param0->unk_4C, v4->heapID);
+            Strbuf *strBuf = MessageUtil_ExpandedStrbuf(strTemplate, msgLoader, window->textEntryID, utilMan->heapID);
 
-            if (param0->unk_0C == 0) {
-                v0 = Text_AddPrinterWithParamsAndColor(param0->unk_10, param0->unk_40, v1, param0->unk_20, param0->unk_24, param0->unk_50, param0->unk_44, NULL);
+            if (window->textRightAligned == FALSE) {
+                printerID = Text_AddPrinterWithParamsAndColor(window->window, window->font, strBuf, window->textXOffset, window->textYOffset, window->renderDelay, window->textColor, NULL);
             } else {
-                int v5, v6;
+                int textWidth = Font_CalcStrbufWidth(window->font, strBuf, Font_GetAttribute(window->font, FONTATTR_LETTER_SPACING));
+                int windowWidth = Window_GetWidth(window->window) * 8 - textWidth;
+                printerID = Text_AddPrinterWithParamsAndColor(window->window, window->font, strBuf, windowWidth, window->textYOffset, window->renderDelay, window->textColor, NULL);
 
-                v5 = Font_CalcStrbufWidth(param0->unk_40, v1, Font_GetAttribute(param0->unk_40, 2));
-                v6 = Window_GetWidth(param0->unk_10) * 8 - v5;
-                v0 = Text_AddPrinterWithParamsAndColor(param0->unk_10, param0->unk_40, v1, v6, param0->unk_24, param0->unk_50, param0->unk_44, NULL);
-
-                param0->unk_0C = 0;
+                window->textRightAligned = FALSE;
             }
 
-            Strbuf_Free(v1);
+            Strbuf_Free(strBuf);
 
-            if (param0->unk_14 == NULL) {
-                StringTemplate_Free(v2);
+            if (window->strTemplate == NULL) {
+                StringTemplate_Free(strTemplate);
             }
 
-            MessageLoader_Free(v3);
+            MessageLoader_Free(msgLoader);
         }
     }
 
-    param0->unk_50 = 0xff;
-    return v0;
+    window->renderDelay = 0xff;
+    return printerID;
 }
 
-int ov97_0223795C(BgConfig *param0, UnkStruct_ov97_02237808 *param1, int param2, int param3, int param4)
+int MainMenuUtil_ShowWindowAtPos(BgConfig *param0, MainMenuWindow *window, int xPos, int yPos, int textEntryID)
 {
-    int v0;
+    int printerID;
 
-    if (param1->unk_10->bgConfig == NULL) {
-        Window_Add(param0, param1->unk_10, param1->unk_2C, param2, param3, param1->unk_18, param1->unk_1C, param1->unk_30, param1->unk_28);
-        v0 = ov97_02237870(param1, param4);
+    if (window->window->bgConfig == NULL) {
+        Window_Add(param0, window->window, window->bgLayer, xPos, yPos, window->width, window->height, window->textPltt, window->baseTile);
+        printerID = MainMenuWindow_PrintText(window, textEntryID);
     } else {
-        if (param2 != -1) {
-            Window_SetXPos(param1->unk_10, param2);
+        if (xPos != -1) {
+            Window_SetXPos(window->window, xPos);
         }
 
-        if (param3 != -1) {
-            Window_SetYPos(param1->unk_10, param3);
+        if (yPos != -1) {
+            Window_SetYPos(window->window, yPos);
         }
 
-        v0 = ov97_02237870(param1, param4);
+        printerID = MainMenuWindow_PrintText(window, textEntryID);
     }
 
-    if (param1->unk_04 == 1) {
-        if (param1->unk_00 == 0) {
-            Window_DrawStandardFrame(param1->unk_10, 0, param1->unk_38, param1->unk_3C);
+    if (window->drawFrame == TRUE) {
+        if (window->scrollable == FALSE) {
+            Window_DrawStandardFrame(window->window, FALSE, window->frameBaseTile, window->framePltt);
         } else {
-            Window_DrawMessageBoxWithScrollCursor(param1->unk_10, 0, param1->unk_38, param1->unk_3C);
+            Window_DrawMessageBoxWithScrollCursor(window->window, FALSE, window->frameBaseTile, window->framePltt);
         }
     }
 
-    return v0;
+    return printerID;
 }
 
-int ov97_02237A18(UnkStruct_ov97_02237808 *param0)
+int MainMenuWindow_GetSize(MainMenuWindow *window)
 {
-    return param0->unk_18 * param0->unk_1C;
+    return window->width * window->height;
 }
 
-void ov97_02237A20(void)
+void MainMenuUtil_InitCharPlttTransferBuffers(void)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
-    CharTransferTemplate v1 = {
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
+    CharTransferTemplate charTransTemplte = {
         40,
         4096,
         4096,
-        NULL,
+        HEAP_ID_SYSTEM,
     };
 
-    v1.heapID = v0->heapID;
+    charTransTemplte.heapID = utilMan->heapID;
 
-    CharTransfer_InitWithVramModes(&v1, GX_OBJVRAMMODE_CHAR_1D_32K, GX_OBJVRAMMODE_CHAR_1D_32K);
-    PlttTransfer_Init(30, v0->heapID);
+    CharTransfer_InitWithVramModes(&charTransTemplte, GX_OBJVRAMMODE_CHAR_1D_32K, GX_OBJVRAMMODE_CHAR_1D_32K);
+    PlttTransfer_Init(30, utilMan->heapID);
 
     CharTransfer_ClearBuffers();
     PlttTransfer_Clear();
 }
 
-BOOL ov97_02237A60(void)
+BOOL MainMenuUtil_CheckSpriteLoaderInit(void)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    return !!v0->unk_34.unk_00;
+    return !!utilMan->spriteManager.spriteList;
 }
 
-void ov97_02237A74(void)
+void MainMenuUtil_InitSpriteLoader(void)
 {
-    int v0;
-    UnkStruct_ov97_0223F550 *v1 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
     NNS_G2dInitOamManagerModule();
 
-    RenderOam_Init(0, 126, 0, 32, 0, 126, 0, 32, v1->heapID);
-    v1->unk_34.unk_00 = SpriteList_InitRendering(128, &v1->unk_34.unk_04, v1->heapID);
-    SetSubScreenViewRect(&v1->unk_34.unk_04, 0, (256 * FX32_ONE));
+    RenderOam_Init(0, 126, 0, 32, 0, 126, 0, 32, utilMan->heapID);
+    utilMan->spriteManager.spriteList = SpriteList_InitRendering(128, &utilMan->spriteManager.renderer, utilMan->heapID);
+    SetSubScreenViewRect(&utilMan->spriteManager.renderer, 0, 256 * FX32_ONE);
 
-    v1->unk_274 = (192 << FX32_SHIFT);
+    utilMan->bottomScreenTopY = 192 << FX32_SHIFT;
 
-    for (v0 = 0; v0 < 6; v0++) {
-        v1->unk_34.unk_190[v0] = SpriteResourceCollection_New(32, v0, v1->heapID);
+    for (int i = 0; i < SPRITE_RESOURCE_MAX; i++) {
+        utilMan->spriteManager.resourceCollections[i] = SpriteResourceCollection_New(32, i, utilMan->heapID);
     }
 }
 
-UnkStruct_ov97_02237AEC *ov97_02237AEC(void)
+MainMenuSpriteManager *MainMenuUtil_GetSpriteManager(void)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    GF_ASSERT(v0 != NULL);
-    GF_ASSERT(v0->unk_34.unk_00 != NULL);
+    GF_ASSERT(utilMan != NULL);
+    GF_ASSERT(utilMan->spriteManager.spriteList != NULL);
 
-    return &v0->unk_34;
+    return &utilMan->spriteManager;
 }
 
-void ov97_02237B0C(int param0, int param1, int param2, int param3, int param4, int param5)
+void MainMenuUtil_LoadSprite(enum NarcID narcID, int tilesID, int plttID, int cellID, int animID, enum DSScreen screen)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
-    int v1 = (param5 == 0) ? NNS_G2D_VRAM_TYPE_2DMAIN : NNS_G2D_VRAM_TYPE_2DSUB;
-    int v2 = 1;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
+    int vramType = screen == DS_SCREEN_MAIN ? NNS_G2D_VRAM_TYPE_2DMAIN : NNS_G2D_VRAM_TYPE_2DSUB;
+    int compressed = TRUE;
 
-    if (param0 == 16) {
-        v2 = 0;
+    if (narcID == NARC_INDEX_ITEMTOOL__ITEMDATA__ITEM_ICON) {
+        compressed = FALSE;
     }
 
-    if (param1 != -1) {
-        v0->unk_34.unk_1A8[param5][0] = SpriteResourceCollection_AddTiles(v0->unk_34.unk_190[0], param0, param1, v2, param5, v1, v0->heapID);
+    if (tilesID != -1) {
+        utilMan->spriteManager.resources[screen][SPRITE_RESOURCE_CHAR] = SpriteResourceCollection_AddTiles(utilMan->spriteManager.resourceCollections[SPRITE_RESOURCE_CHAR], narcID, tilesID, compressed, screen, vramType, utilMan->heapID);
     }
 
-    if (param2 != -1) {
-        v0->unk_34.unk_1A8[param5][1] = SpriteResourceCollection_AddPalette(v0->unk_34.unk_190[1], param0, param2, 0, param5, v1, 3, v0->heapID);
+    if (plttID != -1) {
+        utilMan->spriteManager.resources[screen][SPRITE_RESOURCE_PLTT] = SpriteResourceCollection_AddPalette(utilMan->spriteManager.resourceCollections[SPRITE_RESOURCE_PLTT], narcID, plttID, FALSE, screen, vramType, PLTT_3, utilMan->heapID);
     }
 
-    if (param3 != -1) {
-        v0->unk_34.unk_1A8[param5][2] = SpriteResourceCollection_Add(v0->unk_34.unk_190[2], param0, param3, v2, param5, 2, v0->heapID);
+    if (cellID != -1) {
+        utilMan->spriteManager.resources[screen][SPRITE_RESOURCE_CELL] = SpriteResourceCollection_Add(utilMan->spriteManager.resourceCollections[SPRITE_RESOURCE_CELL], narcID, cellID, compressed, screen, SPRITE_RESOURCE_CELL, utilMan->heapID);
     }
 
-    if (param4 != -1) {
-        v0->unk_34.unk_1A8[param5][3] = SpriteResourceCollection_Add(v0->unk_34.unk_190[3], param0, param4, v2, param5, 3, v0->heapID);
+    if (animID != -1) {
+        utilMan->spriteManager.resources[screen][SPRITE_RESOURCE_ANIM] = SpriteResourceCollection_Add(utilMan->spriteManager.resourceCollections[SPRITE_RESOURCE_ANIM], narcID, animID, compressed, screen, SPRITE_RESOURCE_ANIM, utilMan->heapID);
     }
 
-    SpriteTransfer_RequestChar(v0->unk_34.unk_1A8[param5][0]);
-    SpriteTransfer_RequestPlttFreeSpace(v0->unk_34.unk_1A8[param5][1]);
-    SpriteResourcesHeader_Init(&v0->unk_34.unk_1D8[param5], param5, param5, param5, param5, 0xffffffff, 0xffffffff, 0, 0, v0->unk_34.unk_190[0], v0->unk_34.unk_190[1], v0->unk_34.unk_190[2], v0->unk_34.unk_190[3], NULL, NULL);
+    SpriteTransfer_RequestChar(utilMan->spriteManager.resources[screen][SPRITE_RESOURCE_CHAR]);
+    SpriteTransfer_RequestPlttFreeSpace(utilMan->spriteManager.resources[screen][SPRITE_RESOURCE_PLTT]);
+    SpriteResourcesHeader_Init(&utilMan->spriteManager.resourceHeaders[screen], screen, screen, screen, screen, 0xffffffff, 0xffffffff, FALSE, 0, utilMan->spriteManager.resourceCollections[SPRITE_RESOURCE_CHAR], utilMan->spriteManager.resourceCollections[SPRITE_RESOURCE_PLTT], utilMan->spriteManager.resourceCollections[SPRITE_RESOURCE_CELL], utilMan->spriteManager.resourceCollections[SPRITE_RESOURCE_ANIM], NULL, NULL);
 
-    if (param5 == 0) {
-        GXLayers_EngineAToggleLayers(GX_PLANEMASK_OBJ, 1);
+    if (screen == DS_SCREEN_MAIN) {
+        GXLayers_EngineAToggleLayers(GX_PLANEMASK_OBJ, TRUE);
     } else {
-        GXLayers_EngineBToggleLayers(GX_PLANEMASK_OBJ, 1);
+        GXLayers_EngineBToggleLayers(GX_PLANEMASK_OBJ, TRUE);
     }
 
-    SetVBlankCallback(ov97_02237E58, NULL);
+    SetVBlankCallback(TransferGraphicsOnVBlank, NULL);
 }
 
-void ov97_02237C80(fx32 param0, fx32 param1)
+void MainMenuUtil_SetSubScreenViewRect(fx32 x, fx32 y)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    SetSubScreenViewRect(&v0->unk_34.unk_04, param0, param1);
-    v0->unk_274 = param1;
+    SetSubScreenViewRect(&utilMan->spriteManager.renderer, x, y);
+    utilMan->bottomScreenTopY = y;
 }
 
-void ov97_02237CA0(void)
+void MainMenuUtil_UpdateSpritesSkipGift(void)
 {
-    ov97_02237CAC(0);
+    MainMenuUtil_UpdateSprites(FALSE);
 }
 
-void ov97_02237CAC(int param0)
+void MainMenuUtil_UpdateSprites(BOOL skipDrawGift)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    if (v0->unk_26C) {
-        VecFx32 *v1;
+    if (utilMan->mysteryGiftSprite) {
+        VecFx32 *spritePos;
 
-        if (v0->unk_270 == 0) {
-            if ((Sprite_GetDrawFlag(v0->unk_26C) == 0) && (param0 == 0)) {
-                Sprite_SetDrawFlag(v0->unk_26C, TRUE);
+        if (utilMan->giftSpriteDelay == 0) {
+            if (Sprite_GetDrawFlag(utilMan->mysteryGiftSprite) == FALSE && skipDrawGift == FALSE) {
+                Sprite_SetDrawFlag(utilMan->mysteryGiftSprite, TRUE);
             }
 
-            v1 = (VecFx32 *)Sprite_GetPosition(v0->unk_26C);
+            spritePos = (VecFx32 *)Sprite_GetPosition(utilMan->mysteryGiftSprite);
 
-            if (v1->y < 384 * FX32_ONE) {
-                v1->y += FX32_ONE * 3;
+            if (spritePos->y < 384 * FX32_ONE) {
+                spritePos->y += FX32_ONE * 3;
             }
         } else {
-            v0->unk_270--;
+            utilMan->giftSpriteDelay--;
         }
     }
 
-    if (v0->unk_34.unk_00 != NULL) {
-        SpriteList_Update(v0->unk_34.unk_00);
+    if (utilMan->spriteManager.spriteList != NULL) {
+        SpriteList_Update(utilMan->spriteManager.spriteList);
     }
 }
 
-Sprite *ov97_02237D14(int param0, Sprite *param1, int param2, int param3, int param4)
+Sprite *MainMenuUtil_InitSprite(enum DSScreen screen, Sprite *sprite, int x, int y, int animationIdx)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    if (param1 == NULL) {
-        AffineSpriteListTemplate v1;
+    if (sprite == NULL) {
+        AffineSpriteListTemplate template;
 
-        v1.list = v0->unk_34.unk_00;
-        v1.resourceData = &v0->unk_34.unk_1D8[param0];
-        v1.position.z = 0;
-        v1.affineScale.x = FX32_ONE;
-        v1.affineScale.y = FX32_ONE;
-        v1.affineScale.z = FX32_ONE;
-        v1.affineZRotation = 0;
-        v1.position.x = FX32_ONE * param2;
-        v1.position.y = FX32_ONE * param3;
-        v1.priority = 10;
-        v1.vramType = (param0 == 0) ? NNS_G2D_VRAM_TYPE_2DMAIN : NNS_G2D_VRAM_TYPE_2DSUB;
-        v1.heapID = v0->heapID;
+        template.list = utilMan->spriteManager.spriteList;
+        template.resourceData = &utilMan->spriteManager.resourceHeaders[screen];
+        template.position.z = 0;
+        template.affineScale.x = FX32_ONE;
+        template.affineScale.y = FX32_ONE;
+        template.affineScale.z = FX32_ONE;
+        template.affineZRotation = 0;
+        template.position.x = FX32_ONE *x;
+        template.position.y = FX32_ONE *y;
+        template.priority = 10;
+        template.vramType = screen == DS_SCREEN_MAIN ? NNS_G2D_VRAM_TYPE_2DMAIN : NNS_G2D_VRAM_TYPE_2DSUB;
+        template.heapID = utilMan->heapID;
 
-        if (v1.vramType == NNS_G2D_VRAM_TYPE_2DSUB) {
-            v1.position.y += v0->unk_274;
+        if (template.vramType == NNS_G2D_VRAM_TYPE_2DSUB) {
+            template.position.y += utilMan->bottomScreenTopY;
         }
 
-        param1 = SpriteList_AddAffine(&v1);
+        sprite = SpriteList_AddAffine(&template);
     }
 
-    Sprite_SetAnimateFlag(param1, 1);
-    Sprite_SetExplicitPriority(param1, 0);
-    Sprite_SetAnim(param1, param4);
-    Sprite_SetDrawFlag(param1, TRUE);
+    Sprite_SetAnimateFlag(sprite, TRUE);
+    Sprite_SetExplicitPriority(sprite, 0);
+    Sprite_SetAnim(sprite, animationIdx);
+    Sprite_SetDrawFlag(sprite, TRUE);
 
-    return param1;
+    return sprite;
 }
 
-void ov97_02237DA0(void)
+void MainMenuUtil_FreeSprites(void)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
-    UnkStruct_ov97_02237AEC *v1 = &v0->unk_34;
-    int v2;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
+    MainMenuSpriteManager *spriteMan = &utilMan->spriteManager;
 
-    if (v0->unk_26C) {
-        Sprite_Delete(v0->unk_26C);
-        v0->unk_26C = NULL;
+    if (utilMan->mysteryGiftSprite) {
+        Sprite_Delete(utilMan->mysteryGiftSprite);
+        utilMan->mysteryGiftSprite = NULL;
     }
 
-    if (v1->unk_1A8[0][0]) {
-        SpriteTransfer_ResetCharTransfer(v1->unk_1A8[0][0]);
+    if (spriteMan->resources[DS_SCREEN_MAIN][SPRITE_RESOURCE_CHAR]) {
+        SpriteTransfer_ResetCharTransfer(spriteMan->resources[DS_SCREEN_MAIN][SPRITE_RESOURCE_CHAR]);
     }
 
-    if (v1->unk_1A8[1][0]) {
-        SpriteTransfer_ResetCharTransfer(v1->unk_1A8[1][0]);
+    if (spriteMan->resources[DS_SCREEN_SUB][SPRITE_RESOURCE_CHAR]) {
+        SpriteTransfer_ResetCharTransfer(spriteMan->resources[DS_SCREEN_SUB][SPRITE_RESOURCE_CHAR]);
     }
 
-    if (v1->unk_1A8[0][1]) {
-        SpriteTransfer_ResetPlttTransfer(v1->unk_1A8[0][1]);
+    if (spriteMan->resources[DS_SCREEN_MAIN][SPRITE_RESOURCE_PLTT]) {
+        SpriteTransfer_ResetPlttTransfer(spriteMan->resources[DS_SCREEN_MAIN][SPRITE_RESOURCE_PLTT]);
     }
 
-    if (v1->unk_1A8[1][1]) {
-        SpriteTransfer_ResetPlttTransfer(v1->unk_1A8[1][1]);
+    if (spriteMan->resources[DS_SCREEN_SUB][SPRITE_RESOURCE_PLTT]) {
+        SpriteTransfer_ResetPlttTransfer(spriteMan->resources[DS_SCREEN_SUB][SPRITE_RESOURCE_PLTT]);
     }
 
-    for (v2 = 0; v2 < 6; v2++) {
-        SpriteResourceCollection_Delete(v1->unk_190[v2]);
-        v1->unk_190[v2] = NULL;
+    for (int i = 0; i < SPRITE_RESOURCE_MAX; i++) {
+        SpriteResourceCollection_Delete(spriteMan->resourceCollections[i]);
+        spriteMan->resourceCollections[i] = NULL;
     }
 
-    SpriteList_Delete(v1->unk_00);
-    v1->unk_00 = NULL;
+    SpriteList_Delete(spriteMan->spriteList);
+    spriteMan->spriteList = NULL;
 
     RenderOam_Free();
     CharTransfer_Free();
@@ -504,305 +505,285 @@ void ov97_02237DA0(void)
     SetVBlankCallback(NULL, NULL);
 }
 
-u32 ov97_02237E4C(int param0)
+/*
+ * This function is actually incorrect, since the games check against (1 << version)
+ * to know whether the mystery gift is valid for the current game.
+ * This is however only ever used to set the bitmask for the Ranger Manaphy egg,
+ * and since the wonder card is never saved (only the PGT), it doesn't matter.
+ */
+u32 MainMenuUtil_CalcMysteryGiftVersionBit(enum Version version)
 {
-    return (u32)1 << (param0 - 10);
+    return 1 << (version - VERSION_DIAMOND);
 }
 
-static void ov97_02237E58(void *param0)
+static void TransferGraphicsOnVBlank(void *unused)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    if (v0->unk_F08) {
-        v0->unk_F08(v0);
-        v0->unk_F08 = NULL;
+    if (utilMan->onVBlank) {
+        utilMan->onVBlank(utilMan);
+        utilMan->onVBlank = NULL;
     }
 
     VramTransfer_Process();
     RenderOam_Transfer();
 
-    if (v0->unk_00) {
-        Bg_RunScheduledUpdates(v0->unk_00);
+    if (utilMan->bgConfig) {
+        Bg_RunScheduledUpdates(utilMan->bgConfig);
     }
 
     OS_SetIrqCheckFlag(OS_IE_V_BLANK);
 }
 
-static int ov97_02237EA8(int param0)
+static int CalcPlttOffsetForGiftType(enum MysteryGiftType giftType)
 {
-    int v0;
-
     struct {
-        u8 unk_00, unk_01;
-    } v1[] = {
-        { 0, 0 },
-        { 1, 1 },
-        { 2, 1 },
-        { 3, 2 },
-        { 4, 3 },
-        { 5, 2 },
-        { 6, 2 },
-        { 7, 0 },
-        { 8, 5 },
-        { 9, 5 },
-        { 10, 5 },
-        { 11, 4 },
-        { 12, 5 },
-        { 13, 5 },
+        u8 giftType;
+        u8 paletteOffset;
+    } giftTypeToPlttOffset[] = {
+        { MYST_GIFT_NONE, 0 },
+        { MYST_GIFT_POKEMON, 1 },
+        { MYST_GIFT_EGG, 1 },
+        { MYST_GIFT_ITEM, 2 },
+        { MYST_GIFT_BATTLE_REG, 3 },
+        { MYST_GIFT_DECORATION_GOOD, 2 },
+        { MYST_GIFT_COSMETICS, 2 },
+        { MYST_GIFT_MANAPHY_EGG, 0 },
+        { MYST_GIFT_MEMBER_CARD, 5 },
+        { MYST_GIFT_OAKS_LETTER, 5 },
+        { MYST_GIFT_AZURE_FLUTE, 5 },
+        { MYST_GIFT_POKETCH_APP, 4 },
+        { MYST_GIFT_SECRET_KEY, 5 },
+        { MYST_GIFT_UNKNOWN, 5 },
         { -1 },
     };
 
-    for (v0 = 0; v1[v0].unk_00 != -1; v0++) {
-        if (v1[v0].unk_00 == param0) {
-            return v1[v0].unk_01;
+    for (int i = 0; giftTypeToPlttOffset[i].giftType != -1; i++) {
+        if (giftTypeToPlttOffset[i].giftType == giftType) {
+            return giftTypeToPlttOffset[i].paletteOffset;
         }
     }
 
     return 0;
 }
 
-static void ov97_02237EF8(Sprite *param0, Pokemon *param1, int param2, int param3, u8 *param4, PokemonSpriteTemplate *param5)
+static void LoadPokemonSprite(Sprite *sprite, Pokemon *mon, enum Species species, int form, u8 *buffer, PokemonSpriteTemplate *monSpriteTemplate)
 {
-    int v0, v1;
-    u32 v2;
-    UnkStruct_ov97_0223F550 *v3 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    v0 = Pokemon_GetGender(param1);
-    v1 = Pokemon_IsShiny(param1);
+    enum Gender monGender = Pokemon_GetGender(mon);
+    BOOL shiny = Pokemon_IsShiny(mon);
 
-    BuildPokemonSpriteTemplate(param5, param2, v0, 2, v1, param3, 0);
+    BuildPokemonSpriteTemplate(monSpriteTemplate, species, monGender, FACE_FRONT, shiny, form, 0);
 
-    v2 = Pokemon_GetValue(param1, MON_DATA_PERSONALITY, NULL);
-    sub_020136A4(param5->narcID, param5->character, v3->heapID, 0, 0, 10, 10, param4, v2, 0, 2, param2);
+    u32 personality = Pokemon_GetValue(mon, MON_DATA_PERSONALITY, NULL);
+    sub_020136A4(monSpriteTemplate->narcID, monSpriteTemplate->character, utilMan->heapID, 0, 0, 10, 10, buffer, personality, 0, 2, species);
 
-    DC_FlushRange(param4, 0x20 * 10 * 10);
+    DC_FlushRange(buffer, MON_SPRITE_FRAME_MAX_SIZE_BYTES);
 
-    {
-        NNSG2dImageProxy *v4 = Sprite_GetImageProxy(param0);
-        u32 v5 = NNS_G2dGetImageLocation(v4, NNS_G2D_VRAM_TYPE_2DSUB);
+    NNSG2dImageProxy *imageProxy = Sprite_GetImageProxy(sprite);
+    u32 imageLocation = NNS_G2dGetImageLocation(imageProxy, NNS_G2D_VRAM_TYPE_2DSUB);
 
-        GXS_LoadOBJ(param4, v5 + 1 * (0x20 * 10 * 10), (0x20 * 10 * 10));
-    }
+    GXS_LoadOBJ(buffer, imageLocation + MON_SPRITE_FRAME_MAX_SIZE_BYTES, MON_SPRITE_FRAME_MAX_SIZE_BYTES);
+    NNSG2dImagePaletteProxy *plttProxy = Sprite_GetPaletteProxy(sprite);
+    u32 plttLocation = NNS_G2dGetImagePaletteLocation(plttProxy, NNS_G2D_VRAM_TYPE_2DSUB);
 
-    {
-        NNSG2dImagePaletteProxy *v6 = Sprite_GetPaletteProxy(param0);
-        u32 v7 = NNS_G2dGetImagePaletteLocation(v6, NNS_G2D_VRAM_TYPE_2DSUB);
-
-        Graphics_LoadPalette(param5->narcID, param5->palette, 5, 0x20 * (2 + 1) + v7, 32, v3->heapID);
-    }
+    Graphics_LoadPalette(monSpriteTemplate->narcID, monSpriteTemplate->palette, PAL_LOAD_SUB_OBJ, PLTT_OFFSET(3) + plttLocation, PALETTE_SIZE_BYTES, utilMan->heapID);
 }
 
-static void ov97_02237FB4(UnkStruct_ov97_0223F550 *param0, int param1, WonderCard *param2)
+static void LoadGiftBoxSprite(MainMenuUtilManager *utilMan, enum MysteryGiftType giftType, WonderCard *wonderCard)
 {
-    ov97_02237B0C(116, 35, 32, 34, 33, 1);
-    ov97_02237C80((0 * FX32_ONE), (256 * FX32_ONE));
+    MainMenuUtil_LoadSprite(NARC_INDEX_GRAPHIC__MYSTERY, 35, 32, 34, 33, DS_SCREEN_SUB);
+    MainMenuUtil_SetSubScreenViewRect(0 * FX32_ONE, 256 * FX32_ONE);
 
-    param0->unk_26C = ov97_02237D14(1, param0->unk_26C, HW_LCD_WIDTH / 2, 0, 0);
+    utilMan->mysteryGiftSprite = MainMenuUtil_InitSprite(DS_SCREEN_SUB, utilMan->mysteryGiftSprite, HW_LCD_WIDTH / 2, 0, 0);
 }
 
-static void ov97_02237FF4(UnkStruct_ov97_0223F550 *param0, int param1, WonderCard *param2)
+static void LoadSpriteForMonGift(MainMenuUtilManager *param0, enum MysteryGiftType giftType, WonderCard *wonderCard)
 {
-    Pokemon *v0;
+    MainMenuUtil_LoadSprite(NARC_INDEX_DATA__TRADELIST, 10, 0, 11, 12, DS_SCREEN_SUB);
+    MainMenuUtil_SetSubScreenViewRect(0 * FX32_ONE, 256 * FX32_ONE);
 
-    ov97_02237B0C(54, 10, 0, 11, 12, 1);
-    ov97_02237C80((0 * FX32_ONE), (256 * FX32_ONE));
+    param0->mysteryGiftSprite = MainMenuUtil_InitSprite(DS_SCREEN_SUB, param0->mysteryGiftSprite, HW_LCD_WIDTH / 2, 0, 1);
+    Pokemon *mon = &wonderCard->pgt.data.pokemonGiftData.pokemon;
 
-    param0->unk_26C = ov97_02237D14(1, param0->unk_26C, HW_LCD_WIDTH / 2, 0, 1);
-    v0 = &param2->pgt.data.pokemonGiftData.pokemon;
-
-    switch (param1) {
-    case 1:
-    case 13:
-        ov97_02237EF8(param0->unk_26C, v0, Pokemon_GetValue(v0, MON_DATA_SPECIES, 0), Pokemon_GetValue(v0, MON_DATA_FORM, 0), param0->unk_278, &param0->unk_EF8);
+    switch (giftType) {
+    case MYST_GIFT_POKEMON:
+    case MYST_GIFT_UNKNOWN:
+        LoadPokemonSprite(param0->mysteryGiftSprite, mon, Pokemon_GetValue(mon, MON_DATA_SPECIES, NULL), Pokemon_GetValue(mon, MON_DATA_FORM, NULL), param0->monSpriteBuffer, &param0->monSpriteTemplate);
         break;
-    case 2:
-        ov97_02237EF8(param0->unk_26C, v0, SPECIES_EGG, 0, param0->unk_278, &param0->unk_EF8);
+    case MYST_GIFT_EGG:
+        LoadPokemonSprite(param0->mysteryGiftSprite, mon, SPECIES_EGG, EGG_FORM_BASE, param0->monSpriteBuffer, &param0->monSpriteTemplate);
         break;
-    case 7:
-        ov97_02237EF8(param0->unk_26C, v0, SPECIES_EGG, 1, param0->unk_278, &param0->unk_EF8);
+    case MYST_GIFT_MANAPHY_EGG:
+        LoadPokemonSprite(param0->mysteryGiftSprite, mon, SPECIES_EGG, EGG_FORM_MANAPHY, param0->monSpriteBuffer, &param0->monSpriteTemplate);
         break;
     }
 }
 
-static void ov97_022380C8(UnkStruct_ov97_0223F550 *param0, int param1, WonderCard *param2)
+static void LoadItemSprite(MainMenuUtilManager *utilMan, enum MysteryGiftType giftType, WonderCard *wonderCard)
 {
     int item;
 
-    switch (param1) {
-    case 3:
-        item = param2->pgt.data.itemGiftData.item;
+    switch (giftType) {
+    case MYST_GIFT_ITEM:
+        item = wonderCard->pgt.data.itemGiftData.item;
         break;
-    case 8:
+    case MYST_GIFT_MEMBER_CARD:
         item = ITEM_MEMBER_CARD;
         break;
-    case 9:
+    case MYST_GIFT_OAKS_LETTER:
         item = ITEM_OAKS_LETTER;
         break;
-    case 10:
+    case MYST_GIFT_AZURE_FLUTE:
         item = ITEM_AZURE_FLUTE;
         break;
-    case 12:
+    case MYST_GIFT_SECRET_KEY:
         item = ITEM_SECRET_KEY;
         break;
     }
 
-    ov97_02237B0C(16, Item_FileID(item, ITEM_FILE_TYPE_ICON), Item_FileID(item, ITEM_FILE_TYPE_PALETTE), Item_IconNCERFile(), Item_IconNANRFile(), 1);
-    ov97_02237C80((0 * FX32_ONE), (256 * FX32_ONE));
+    MainMenuUtil_LoadSprite(NARC_INDEX_ITEMTOOL__ITEMDATA__ITEM_ICON, Item_FileID(item, ITEM_FILE_TYPE_ICON), Item_FileID(item, ITEM_FILE_TYPE_PALETTE), Item_IconNCERFile(), Item_IconNANRFile(), DS_SCREEN_SUB);
+    MainMenuUtil_SetSubScreenViewRect(0 * FX32_ONE, 256 * FX32_ONE);
 
-    param0->unk_26C = ov97_02237D14(1, param0->unk_26C, HW_LCD_WIDTH / 2, 0, 0);
+    utilMan->mysteryGiftSprite = MainMenuUtil_InitSprite(DS_SCREEN_SUB, utilMan->mysteryGiftSprite, HW_LCD_WIDTH / 2, 0, 0);
 }
 
-static void ov97_02238174(void *param0)
+static void LoadMysteryGiftPalettes(MainMenuUtilManager *utilMan)
 {
-    UnkStruct_ov97_0223F550 *v0 = (UnkStruct_ov97_0223F550 *)param0;
-    Graphics_LoadPalette(NARC_INDEX_GRAPHIC__MYSTERY, 29, 4, 16 * 2 * 8, 16 * 2 * 6, v0->heapID);
+    Graphics_LoadPalette(NARC_INDEX_GRAPHIC__MYSTERY, 29, PAL_LOAD_SUB_BG, PLTT_OFFSET(8), 6 * PALETTE_SIZE_BYTES, utilMan->heapID);
 }
 
-void ov97_02238194(BgConfig *param0, WonderCard *param1)
+void MainMenuUtil_LoadGiftSprite(BgConfig *bgConfig, WonderCard *wonderCard)
 {
-    int v0, v1;
-    UnkStruct_ov97_0223F550 *v2 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    v1 = param1->pgt.type;
-    v0 = ov97_02237EA8(v1);
+    enum MysteryGiftType giftType = wonderCard->pgt.type;
+    int plttOffset = CalcPlttOffsetForGiftType(giftType);
 
-    Graphics_LoadTilesToBgLayer(NARC_INDEX_GRAPHIC__MYSTERY, 30, param0, 5, 0, 10 * 16 * 0x20, 1, v2->heapID);
+    Graphics_LoadTilesToBgLayer(NARC_INDEX_GRAPHIC__MYSTERY, 30, bgConfig, BG_LAYER_SUB_1, 0, 10 * 16 * 0x20, TRUE, utilMan->heapID);
 
-    {
-        NNSG2dScreenData *v3;
-        void *v4 = LoadMemberFromNARC(NARC_INDEX_GRAPHIC__MYSTERY, 31, 1, v2->heapID, 1);
+    NNSG2dScreenData *screenData;
+    void *nscr = LoadMemberFromNARC(NARC_INDEX_GRAPHIC__MYSTERY, 31, TRUE, utilMan->heapID, TRUE);
 
-        NNS_G2dGetUnpackedScreenData(v4, &v3);
+    NNS_G2dGetUnpackedScreenData(nscr, &screenData);
 
-        Bg_LoadTilemapBuffer(param0, 5, v3->rawData, 32 * 24 * 2);
-        Heap_FreeToHeap(v4);
-    }
+    Bg_LoadTilemapBuffer(bgConfig, BG_LAYER_SUB_1, screenData->rawData, 32 * 24 * 2);
+    Heap_FreeToHeap(nscr);
 
-    Bg_ChangeTilemapRectPalette(param0, 5, 0, 0, 32, 24, 8 + v0);
-    Bg_ScheduleTilemapTransfer(param0, 5);
+    Bg_ChangeTilemapRectPalette(bgConfig, BG_LAYER_SUB_1, 0, 0, 32, 24, PLTT_8 + plttOffset);
+    Bg_ScheduleTilemapTransfer(bgConfig, BG_LAYER_SUB_1);
 
-    v2->unk_F08 = ov97_02238174;
-    v2->unk_00 = param0;
+    utilMan->onVBlank = LoadMysteryGiftPalettes;
+    utilMan->bgConfig = bgConfig;
 
-    switch (v1) {
-    case 4:
-    case 5:
-    case 6:
-    case 11:
-        ov97_02237FB4(v2, v1, param1);
+    switch (giftType) {
+    case MYST_GIFT_BATTLE_REG:
+    case MYST_GIFT_DECORATION_GOOD:
+    case MYST_GIFT_COSMETICS:
+    case MYST_GIFT_POKETCH_APP:
+        LoadGiftBoxSprite(utilMan, giftType, wonderCard);
         break;
-    case 7:
-        v2->unk_270 = 120;
-    case 1:
-    case 2:
-    case 13:
-        ov97_02237FF4(v2, v1, param1);
+    case MYST_GIFT_MANAPHY_EGG:
+        utilMan->giftSpriteDelay = 120;
+    case MYST_GIFT_POKEMON:
+    case MYST_GIFT_EGG:
+    case MYST_GIFT_UNKNOWN:
+        LoadSpriteForMonGift(utilMan, giftType, wonderCard);
         break;
-    case 3:
-    case 8:
-    case 9:
-    case 10:
-    case 12:
-        ov97_022380C8(v2, v1, param1);
+    case MYST_GIFT_ITEM:
+    case MYST_GIFT_MEMBER_CARD:
+    case MYST_GIFT_OAKS_LETTER:
+    case MYST_GIFT_AZURE_FLUTE:
+    case MYST_GIFT_SECRET_KEY:
+        LoadItemSprite(utilMan, giftType, wonderCard);
         break;
     }
 
-    Sprite_SetDrawFlag(v2->unk_26C, FALSE);
+    Sprite_SetDrawFlag(utilMan->mysteryGiftSprite, FALSE);
 }
 
-void ov97_0223829C(MysteryGiftEventData *param0, WonderCard *param1, int heapID)
+void MainMenuUtil_EncryptWonderCard(MysteryGiftEventData *eventData, WonderCard *wonderCard, enum HeapId heapID)
 {
-    MATHCRC16Table *v0;
-    CRYPTORC4Context *v1;
-    u16 v2[4];
-    u16 v3, v4;
-    int v5;
 
-    v0 = Heap_AllocFromHeap(heapID, sizeof(MATHCRC16Table));
-    MATH_CRC16InitTable(v0);
+    MATHCRC16Table *crcTable = Heap_AllocFromHeap(heapID, sizeof(MATHCRC16Table));
+    MATH_CRC16InitTable(crcTable);
 
-    v3 = MATH_CalcCRC16(v0, &param0->header, sizeof(MysteryGiftEventHeader));
-    Heap_FreeToHeap(v0);
+    u16 headerCRC = MATH_CalcCRC16(crcTable, &eventData->header, sizeof(MysteryGiftEventHeader));
+    Heap_FreeToHeap(crcTable);
 
-    OS_GetMacAddress((u8 *)v2);
+    u16 key[4];
+    OS_GetMacAddress((u8 *)key);
 
-    v2[3] = v2[1];
-    v2[1] = v3;
-    v4 = 0xD679;
+    key[3] = key[1];
+    key[1] = headerCRC;
+    u16 magic = WONDER_CARD_ENCRYPTION_MAGIC;
 
-    for (v5 = 0; v5 < 4; v5++) {
-        v2[v5] = v2[v5] ^ v4;
-        v4 = v2[v5];
+    for (int i = 0; i < 4; i++) {
+        key[i] = key[i] ^ magic;
+        magic = key[i];
     }
 
-    v1 = Heap_AllocFromHeap(heapID, sizeof(CRYPTORC4Context));
+    CRYPTORC4Context *cryptoCtx = Heap_AllocFromHeap(heapID, sizeof(CRYPTORC4Context));
 
-    CRYPTO_RC4Init(v1, v2, 8);
-    CRYPTO_RC4Encrypt(v1, &param0->wonderCard, sizeof(WonderCard), param1);
+    CRYPTO_RC4Init(cryptoCtx, key, sizeof(key));
+    CRYPTO_RC4Encrypt(cryptoCtx, &eventData->wonderCard, sizeof(WonderCard), wonderCard);
 
-    Heap_FreeToHeap(v1);
+    Heap_FreeToHeap(cryptoCtx);
 }
 
-void ov97_02238324(MysteryGiftEventData *param0, WonderCard *param1, int heapID)
+void MainMenuUtil_DecryptReceivedWonderCard(MysteryGiftEventData *eventData, WonderCard *wonderCard, enum HeapId heapID)
 {
-    MATHCRC16Table *v0;
-    CRYPTORC4Context *v1;
-    const WMBssDesc *v2;
-    u16 v3[4];
-    u16 v4, v5;
-    int v6;
+    MATHCRC16Table *crcTable = Heap_AllocFromHeap(heapID, sizeof(MATHCRC16Table));
+    MATH_CRC16InitTable(crcTable);
 
-    v0 = Heap_AllocFromHeap(heapID, sizeof(MATHCRC16Table));
-    MATH_CRC16InitTable(v0);
+    u16 headerCRC = MATH_CalcCRC16(crcTable, &eventData->header, sizeof(MysteryGiftEventHeader));
+    Heap_FreeToHeap(crcTable);
 
-    v4 = MATH_CalcCRC16(v0, &param0->header, sizeof(MysteryGiftEventHeader));
-    Heap_FreeToHeap(v0);
+    u16 key[4];
+    const WMBssDesc *bssDesc = sub_02033F3C(0); // Network ID 0 is the sending console
+    memcpy(key, bssDesc->bssid, WM_SIZE_BSSID); // BSSID = MAC address of the sending console
 
-    v2 = sub_02033F3C(0);
-    memcpy(v3, v2->bssid, WM_SIZE_BSSID);
+    key[3] = key[1];
+    key[1] = headerCRC;
+    u16 magic = WONDER_CARD_ENCRYPTION_MAGIC;
 
-    v3[3] = v3[1];
-    v3[1] = v4;
-    v5 = 0xD679;
-
-    for (v6 = 0; v6 < 4; v6++) {
-        v3[v6] = v3[v6] ^ v5;
-        v5 = v3[v6];
+    for (int i = 0; i < 4; i++) {
+        key[i] = key[i] ^ magic;
+        magic = key[i];
     }
 
-    v1 = Heap_AllocFromHeap(heapID, sizeof(CRYPTORC4Context));
+    CRYPTORC4Context *cryptoCtx = Heap_AllocFromHeap(heapID, sizeof(CRYPTORC4Context));
 
-    CRYPTO_RC4Init(v1, v3, 8);
-    CRYPTO_RC4Encrypt(v1, &param0->wonderCard, sizeof(WonderCard), param1);
+    CRYPTO_RC4Init(cryptoCtx, key, sizeof(key));
+    CRYPTO_RC4Encrypt(cryptoCtx, &eventData->wonderCard, sizeof(WonderCard), wonderCard);
 
-    Heap_FreeToHeap(v1);
+    Heap_FreeToHeap(cryptoCtx);
 }
 
-void ov97_022383C4(ListMenu *param0, u32 param1, u8 param2)
+void MainMenuUtil_ListMenuCursorCB(ListMenu *listMenu, u32 index, u8 onInit)
 {
-    switch (param2) {
-    case 0:
+    switch (onInit) {
+    case FALSE:
         Sound_PlayEffect(SEQ_SE_CONFIRM);
         break;
-    case 1:
+    case TRUE:
         break;
     }
 }
 
-static void ov97_022383DC(void)
+static void TerminateOnGBACartRemoved(void)
 {
-    if (PAD_DetectFold() == 0) {
-        if (CTRDG_IsAgbCartridge() == 0) {
-            CTRDG_TerminateForPulledOut();
-        }
+    if (PAD_DetectFold() == FALSE && CTRDG_IsAgbCartridge() == FALSE) {
+        CTRDG_TerminateForPulledOut();
     }
 }
 
-void ov97_02238400(BOOL param0)
+void MainMenuUtil_ToggleTerminateOnGBACartRemoved(BOOL enable)
 {
-    if (param0 == 1) {
+    if (enable == TRUE) {
         OS_DisableIrq();
-        OS_SetIrqFunction(OS_IE_CARTRIDGE, ov97_022383DC);
+        OS_SetIrqFunction(OS_IE_CARTRIDGE, TerminateOnGBACartRemoved);
         OS_EnableIrqMask(OS_IE_CARTRIDGE);
         OS_EnableIrq();
     } else {
@@ -810,86 +791,84 @@ void ov97_02238400(BOOL param0)
     }
 }
 
-static void ov97_0223843C(void)
+static void GBACartRemovedIrqStub(void)
 {
     return;
 }
 
-void ov97_02238440(void)
+void MainMenuUtil_UnsetGBACartIRQFunc(void)
 {
     OS_DisableIrq();
-    OS_SetIrqFunction(OS_IE_CARTRIDGE, ov97_0223843C);
+    OS_SetIrqFunction(OS_IE_CARTRIDGE, GBACartRemovedIrqStub);
     OS_EnableIrqMask(OS_IE_CARTRIDGE);
     OS_EnableIrq();
 }
 
-void ov97_0223846C(SaveData *saveData)
+void MainMenuUtil_InitSaving(SaveData *saveData)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    v0->saveData = saveData;
-    v0->unk_14 = 0;
+    utilMan->saveData = saveData;
+    utilMan->savingStatus = MAIN_MENU_UTIL_INIT_SAVING;
 }
 
-int ov97_0223847C(void)
+enum SaveResult MainMenuUtil_SaveState(void)
 {
-    int v0;
-    UnkStruct_ov97_0223F550 *v1 = &Unk_ov97_0223F550;
+    enum SaveResult saveResult;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    switch (v1->unk_14) {
-    case 0:
+    switch (utilMan->savingStatus) {
+    case MAIN_MENU_UTIL_INIT_SAVING:
         ResetLock(RESET_LOCK_SOFT_RESET);
-        SaveData_SaveStateInit(v1->saveData, 2);
-        v1->unk_14++;
+        SaveData_SaveStateInit(utilMan->saveData, 2);
+        utilMan->savingStatus++;
         break;
-    case 1:
-        v0 = SaveData_SaveStateMain(v1->saveData);
+    case MAIN_MENU_UTIL_SAVING:
+        saveResult = SaveData_SaveStateMain(utilMan->saveData);
 
-        if (v0 == 3) {
-            v1->unk_14 = 3;
-        } else if (v0 == 2) {
-            v1->unk_14 = 2;
-        } else if (v0 == 1) {
-            v1->unk_14 = 4;
+        if (saveResult == SAVE_RESULT_CORRUPT) {
+            utilMan->savingStatus = MAIN_MENU_UTIL_SAVE_FAILURE;
+        } else if (saveResult == SAVE_RESULT_OK) {
+            utilMan->savingStatus = MAIN_MENU_UTIL_SAVE_SUCCESS;
+        } else if (saveResult == SAVE_RESULT_PROCEED_FINAL) {
+            utilMan->savingStatus = MAIN_MENU_UTIL_SAVING_IDLE;
         }
 
-        if ((v0 == 2) || (v0 == 3)) {
+        if (saveResult == SAVE_RESULT_OK || saveResult == SAVE_RESULT_CORRUPT) {
             ResetUnlock(RESET_LOCK_SOFT_RESET);
         }
 
-        return v0;
+        return saveResult;
+    case MAIN_MENU_UTIL_SAVING_IDLE:
         break;
-    case 4:
+    case MAIN_MENU_UTIL_SAVE_SUCCESS:
         break;
-    case 2:
-        break;
-    case 3:
+    case MAIN_MENU_UTIL_SAVE_FAILURE:
         break;
     }
 
-    return 0;
+    return SAVE_RESULT_PROCEED;
 }
 
-void ov97_022384F4(void)
+void MainMenuUtil_ContinueSaving(void)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    if (v0->unk_14 == 4) {
-        v0->unk_14 = 1;
+    if (utilMan->savingStatus == MAIN_MENU_UTIL_SAVING_IDLE) {
+        utilMan->savingStatus = MAIN_MENU_UTIL_SAVING;
     }
 }
 
-void ov97_0223850C(void)
+void MainMenuUtil_CancelSave(void)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
+    MainMenuUtilManager *utilMan = &sMainMenuUtilManager;
 
-    SaveData_SaveStateCancel(v0->saveData);
-    v0->unk_14 = 3;
+    SaveData_SaveStateCancel(utilMan->saveData);
+    utilMan->savingStatus = MAIN_MENU_UTIL_SAVE_FAILURE;
     ResetUnlock(RESET_LOCK_SOFT_RESET);
 }
 
-int ov97_02238528(void)
+int MainMenuUtil_GetSavingStatus(void)
 {
-    UnkStruct_ov97_0223F550 *v0 = &Unk_ov97_0223F550;
-    return v0->unk_14;
+    return sMainMenuUtilManager.savingStatus;
 }
diff --git a/src/overlay097/wonder_cards_app.c b/src/overlay097/wonder_cards_app.c
index 4a38ae4599..101f135283 100644
--- a/src/overlay097/wonder_cards_app.c
+++ b/src/overlay097/wonder_cards_app.c
@@ -596,7 +596,7 @@ static StateTransitionListMenuEntryTemplate sConfirmStartWirelessOptions[] = {
 
 static ListMenuTemplate sWonderCardsAppListMenuTemplate = {
     .choices = NULL,
-    .cursorCallback = ov97_022383C4,
+    .cursorCallback = MainMenuUtil_ListMenuCursorCB,
     .printCallback = NULL,
     .window = NULL,
     .count = 0,
@@ -618,9 +618,9 @@ static ListMenuTemplate sWonderCardsAppListMenuTemplate = {
 static void LoadWcShareScreenButtonsGraphics(WonderCardsAppData *appData)
 {
     ResetAllSprites(appData);
-    ov97_02237A20();
-    ov97_02237A74();
-    ov97_02237B0C(NARC_INDEX_GRAPHIC__MYSTERY, 15, 12, 14, 13, 0);
+    MainMenuUtil_InitCharPlttTransferBuffers();
+    MainMenuUtil_InitSpriteLoader();
+    MainMenuUtil_LoadSprite(NARC_INDEX_GRAPHIC__MYSTERY, 15, 12, 14, 13, 0);
 }
 
 static void ResetAllSprites(WonderCardsAppData *appData)
@@ -648,16 +648,16 @@ static void ResetAllSprites(WonderCardsAppData *appData)
     }
 
     appData->selectedWcSprites[0] = appData->selectedWcSprites[1] = appData->selectedWcSprites[2] = NULL;
-    ov97_02237DA0();
+    MainMenuUtil_FreeSprites();
 }
 
 static void ShowWcShareButtons(WonderCardsAppData *appData)
 {
     appData->shareScreenSelectedBtn = 0;
-    appData->shareScreenBtnSprites[WC_SHARE_BTN_SEND] = ov97_02237D14(0, appData->shareScreenBtnSprites[WC_SHARE_BTN_SEND], 72, WONDERCARD_HEIGHT, 1);
+    appData->shareScreenBtnSprites[WC_SHARE_BTN_SEND] = MainMenuUtil_InitSprite(0, appData->shareScreenBtnSprites[WC_SHARE_BTN_SEND], 72, WONDERCARD_HEIGHT, 1);
     Sprite_SetExplicitPriority(appData->shareScreenBtnSprites[WC_SHARE_BTN_SEND], 2);
 
-    appData->shareScreenBtnSprites[WC_SHARE_BTN_CANCEL] = ov97_02237D14(0, appData->shareScreenBtnSprites[WC_SHARE_BTN_CANCEL], 184, WONDERCARD_HEIGHT, 0);
+    appData->shareScreenBtnSprites[WC_SHARE_BTN_CANCEL] = MainMenuUtil_InitSprite(0, appData->shareScreenBtnSprites[WC_SHARE_BTN_CANCEL], 184, WONDERCARD_HEIGHT, 0);
     Sprite_SetExplicitPriority(appData->shareScreenBtnSprites[WC_SHARE_BTN_CANCEL], 2);
 }
 
@@ -1154,13 +1154,13 @@ static void LoadPokemonSpritesForSelectedWc(WonderCardsAppData *appData)
     int spriteX, i; // forward declarations required to match
 
     if (appData->selectedWcSprites[0] == NULL && appData->selectedWcSprites[1] == NULL && appData->selectedWcSprites[2] == NULL) {
-        if (ov97_02237A60() == TRUE) {
+        if (MainMenuUtil_CheckSpriteLoaderInit() == TRUE) {
             ResetAllSprites(appData);
         }
 
-        ov97_02237A20();
-        ov97_02237A74();
-        ov97_02237B0C(NARC_INDEX_GRAPHIC__MYSTERY, 26, 23, 25, 24, 0);
+        MainMenuUtil_InitCharPlttTransferBuffers();
+        MainMenuUtil_InitSpriteLoader();
+        MainMenuUtil_LoadSprite(NARC_INDEX_GRAPHIC__MYSTERY, 26, 23, 25, 24, 0);
 
         Graphics_LoadPalette(NARC_INDEX_POKETOOL__ICONGRA__PL_POKE_ICON, PokeIconPalettesFileIndex(), PAL_LOAD_MAIN_OBJ, PLTT_OFFSET(3), 0, appData->heapID);
     }
@@ -1181,7 +1181,7 @@ static void LoadPokemonSpritesForSelectedWc(WonderCardsAppData *appData)
 
         NNSG2dCharacterData *charData;
 
-        appData->selectedWcSprites[i] = ov97_02237D14(0, appData->selectedWcSprites[i], spriteX, 16, 10 + i);
+        appData->selectedWcSprites[i] = MainMenuUtil_InitSprite(0, appData->selectedWcSprites[i], spriteX, 16, 10 + i);
         u8 *ncgrBuffer = Graphics_GetCharData(NARC_INDEX_POKETOOL__ICONGRA__PL_POKE_ICON, PokeIconSpriteIndex(species, FALSE, HEAP_ID_SYSTEM), FALSE, &charData, appData->heapID);
 
         DC_FlushRange(charData->pRawData, (4 * 4 * 0x20));
@@ -1208,7 +1208,7 @@ static BOOL WonderCardsApp_Init(ApplicationManager *appMan, int *unused)
     appData->selectedWondercardSlot = NUM_WONDERCARD_SLOTS - 1;
     appData->numPlayerConnections = 1;
 
-    ov97_02237694(HEAP_ID_WONDER_CARDS_APP);
+    MainMenuUtil_Init(HEAP_ID_WONDER_CARDS_APP);
     Heap_Create(HEAP_ID_SYSTEM, HEAP_ID_91, 0x300);
 
     return TRUE;
@@ -1317,7 +1317,7 @@ static BOOL RunFlipAnimFrame(WonderCardsAppData *appData)
 
 static void WonderCardsAppCallbackSaveGame(WonderCardsAppData *appData)
 {
-    int stage = ov97_0223847C();
+    int stage = MainMenuUtil_SaveState();
 
     if (stage == 2 || stage == 3) {
         Sound_PlayEffect(SEQ_SE_DP_SAVE);
@@ -1339,7 +1339,7 @@ static void UpdateShareCount(WonderCardsAppData *appData)
     }
 
     SaveData_SetChecksum(SAVE_TABLE_ENTRY_MYSTERY_GIFT);
-    ov97_0223846C(appData->saveData);
+    MainMenuUtil_InitSaving(appData->saveData);
 
     appData->mainCallback = WonderCardsAppCallbackSaveGame;
 }
@@ -1578,21 +1578,21 @@ static int WonderCardsApp_Main(ApplicationManager *appMan, enum WonderCardsAppSt
         break;
     case WC_APP_STATE_DISTRIBUTION_UNDERWAY:
         if (--appData->shouldSendWc == FALSE) {
-            ov97_0223829C(&appData->mysteryGiftAppData.eventData, &appData->currentWonderCard, appData->heapID);
+            MainMenuUtil_EncryptWonderCard(&appData->mysteryGiftAppData.eventData, &appData->currentWonderCard, appData->heapID);
             ov97_0222D1F0((const void *)&appData->currentWonderCard, sizeof(WonderCard));
             UpdateShareCount(appData);
             *state = WC_APP_STATE_START_COMM_SYNC;
         }
         break;
     case WC_APP_STATE_START_COMM_SYNC:
-        if (ov97_02238528() == 4) {
+        if (MainMenuUtil_GetSavingStatus() == 4) {
             CommTiming_StartSync(0x93);
             *state = WC_APP_STATE_WAIT_FOR_COMM_SYNC;
         }
         break;
     case WC_APP_STATE_WAIT_FOR_COMM_SYNC:
         if (CountConnectedPlayers(appData) == 0 || CommTiming_IsSyncState(0x93) == TRUE) {
-            ov97_022384F4();
+            MainMenuUtil_ContinueSaving();
             ShowWindowFromTemplateIndex(appData, &appData->messageBox, MSG_BOX_DISTRIBUTION_SUCCESSFUL, 640);
             DestroyWaitDial(appData->waitDial);
             StopWirelessCommunication(appData, state, WC_APP_STATE_DISTRIBUTION_SUCCESSFUL);
@@ -1624,7 +1624,7 @@ static int WonderCardsApp_Main(ApplicationManager *appMan, enum WonderCardsAppSt
         SpriteList_Update(appData->spriteList);
     }
 
-    ov97_02237CA0();
+    MainMenuUtil_UpdateSpritesSkipGift();
 
     if (appData->mainCallback) {
         appData->mainCallback(appData);