diff --git a/PKHeX.Core/Legality/Formatting/LegalityCheckStrings.cs b/PKHeX.Core/Legality/Formatting/LegalityCheckStrings.cs
index 409dcef9d..daa480a8d 100644
--- a/PKHeX.Core/Legality/Formatting/LegalityCheckStrings.cs
+++ b/PKHeX.Core/Legality/Formatting/LegalityCheckStrings.cs
@@ -203,6 +203,7 @@ public static class LegalityCheckStrings
     public static string LFormPikachuCosplay { get; set; } = "Only Cosplay Pikachu can have this form.";
     public static string LFormPikachuCosplayInvalid { get; set; } = "Cosplay Pikachu cannot have the default form.";
     public static string LFormPikachuEventInvalid { get; set; } = "Event Pikachu cannot have the default form.";
+    public static string LFormInvalidExpect_0 { get; set; } = "Form is invalid, expected form index {0}.";
     public static string LFormValid { get; set; } = "Form is Valid.";
     public static string LFormVivillon { get; set; } = "Valid Vivillon pattern.";
     public static string LFormVivillonEventPre { get; set; } = "Event Vivillon pattern on pre-evolution.";
diff --git a/PKHeX.Core/Legality/Verifiers/FormVerifier.cs b/PKHeX.Core/Legality/Verifiers/FormVerifier.cs
index 2d46e142e..eaf7be87c 100644
--- a/PKHeX.Core/Legality/Verifiers/FormVerifier.cs
+++ b/PKHeX.Core/Legality/Verifiers/FormVerifier.cs
@@ -66,6 +66,8 @@ private CheckResult VerifyForm(LegalityAnalysis data)
                 break;
             case Unown when Info.Generation == 2 && form >= 26:
                 return GetInvalid(string.Format(LFormInvalidRange, "Z", form == 26 ? "!" : "?"));
+            case Unown when Info.Generation == 3 && form != EntityPID.GetUnownForm3(pk.EncryptionConstant):
+                return GetInvalid(string.Format(LFormInvalidExpect_0, EntityPID.GetUnownForm3(pk.EncryptionConstant)));
             case Dialga or Palkia or Giratina or Arceus when form > 0 && pk is PA8: // can change forms with key items
                 break;
             case Giratina when form == 1 ^ pk.HeldItem == 112: // Giratina, Origin form only with Griseous Orb
diff --git a/PKHeX.Core/Saves/SaveFile.cs b/PKHeX.Core/Saves/SaveFile.cs
index 720a63ddd..f56a35634 100644
--- a/PKHeX.Core/Saves/SaveFile.cs
+++ b/PKHeX.Core/Saves/SaveFile.cs
@@ -140,7 +140,7 @@ public virtual MysteryGiftAlbum GiftAlbum
     #region Player Info
     public virtual int Gender { get; set; }
     public virtual int Language { get => -1; set { } }
-    public virtual int Game { get => -1; set { } }
+    public virtual int Game { get => (int)GameVersion.Any; set { } }
     public virtual int TID { get; set; }
     public virtual int SID { get; set; }
     public virtual string OT { get; set; } = "PKHeX";