diff --git a/PKHeX.Core/Game/GameStrings/GameStrings.cs b/PKHeX.Core/Game/GameStrings/GameStrings.cs
index 58940256a..24fd7ce6c 100644
--- a/PKHeX.Core/Game/GameStrings/GameStrings.cs
+++ b/PKHeX.Core/Game/GameStrings/GameStrings.cs
@@ -496,7 +496,6 @@ public IReadOnlyList<ComboItem> GetLocationList(GameVersion Version, int SaveFor
                 case GameVersion.US:
                 case GameVersion.UM:
 
-                case GameVersion.GO:
                 case GameVersion.RD:
                 case GameVersion.BU:
                 case GameVersion.GN:
@@ -509,6 +508,7 @@ public IReadOnlyList<ComboItem> GetLocationList(GameVersion Version, int SaveFor
 
                 case GameVersion.GP:
                 case GameVersion.GE:
+                case GameVersion.GO:
                     return MetGen7GG.Take(3).Concat(MetGen7GG.Skip(3).OrderByDescending(loc => loc.Value <= 54)).ToList(); // Pokémon League
             }
 
diff --git a/PKHeX.Core/Game/GameUtil.cs b/PKHeX.Core/Game/GameUtil.cs
index 874659e9d..03bb9d370 100644
--- a/PKHeX.Core/Game/GameUtil.cs
+++ b/PKHeX.Core/Game/GameUtil.cs
@@ -221,7 +221,7 @@ public static bool Contains(this GameVersion g1, GameVersion g2)
                 case USUM:
                     return g2 == US || g2 == UM;
                 case GG:
-                    return g2 == GP || g2 == GE;
+                    return g2 == GP || g2 == GE || g2 == GO;
                 case Gen7:
                     return SM.Contains(g2) || USUM.Contains(g2) || GG.Contains(g2);
 
diff --git a/PKHeX.Core/Game/GameVersion.cs b/PKHeX.Core/Game/GameVersion.cs
index 4c4eeb7e3..34dbf84d4 100644
--- a/PKHeX.Core/Game/GameVersion.cs
+++ b/PKHeX.Core/Game/GameVersion.cs
@@ -139,7 +139,7 @@ public enum GameVersion
         #endregion
 
         /// <summary>
-        /// Pokémon Pokémon GO (Unused)
+        /// Pokémon GO (GO -> Lets Go transfers)
         /// </summary>
         GO = 34,
 
diff --git a/PKHeX.Core/Legality/Moves/MoveLevelUp.cs b/PKHeX.Core/Legality/Moves/MoveLevelUp.cs
index acbdfa3ff..79ae41aad 100644
--- a/PKHeX.Core/Legality/Moves/MoveLevelUp.cs
+++ b/PKHeX.Core/Legality/Moves/MoveLevelUp.cs
@@ -186,7 +186,7 @@ private static LearnVersion GetIsLevelUp7(int species, int move, int form, GameV
         {
             switch (ver)
             {
-                case GP: case GE: case GG:
+                case GP: case GE: case GG: case GO:
                     return LearnGG.GetIsLevelUp(species, form, move);
 
                 case Any:
@@ -432,7 +432,7 @@ private static List<int> AddMovesLevelUp7(List<int> moves, GameVersion ver, int
                 max = 100; // Move reminder can teach any level in movepool now!
             switch (ver)
             {
-                case GP: case GE: case GG:
+                case GP: case GE: case GG: case GO:
                     return LearnGG.AddMoves(moves, species, form, max);
 
                 case Any:
diff --git a/PKHeX.Core/Legality/Moves/MoveTechnicalMachine.cs b/PKHeX.Core/Legality/Moves/MoveTechnicalMachine.cs
index 1290c3a08..6a5e0ec51 100644
--- a/PKHeX.Core/Legality/Moves/MoveTechnicalMachine.cs
+++ b/PKHeX.Core/Legality/Moves/MoveTechnicalMachine.cs
@@ -329,6 +329,7 @@ private static void AddMachine7(List<int> r, int species, int form, GameVersion
                 case GameVersion.GP:
                 case GameVersion.GE:
                 case GameVersion.GG:
+                case GameVersion.GO:
                     AddMachineGG(r, species, form);
                     return;
                 case GameVersion.SN:
diff --git a/PKHeX.Core/PKM/PKM.cs b/PKHeX.Core/PKM/PKM.cs
index e77dbacdc..e00e73680 100644
--- a/PKHeX.Core/PKM/PKM.cs
+++ b/PKHeX.Core/PKM/PKM.cs
@@ -299,7 +299,7 @@ private void SetID7(int sid7, int tid7)
         public bool AO => Version == (int)GameVersion.AS || Version == (int)GameVersion.OR;
         public bool SM => Version == (int)GameVersion.SN || Version == (int)GameVersion.MN;
         public bool USUM => Version == (int)GameVersion.US || Version == (int)GameVersion.UM;
-        public bool GG => Version == (int)GameVersion.GP || Version == (int)GameVersion.GE;
+        public bool GG => Version == (int)GameVersion.GP || Version == (int)GameVersion.GE || Version == (int)GameVersion.GO;
         protected bool PtHGSS => Pt || HGSS;
         public bool VC => VC1 || VC2;
         public bool Gen7 => (Version >= 30 && Version <= 33) || GG;