do it in the editor too

Assets/Scripts/GameManager.cs

@@ -1110,7 +1110,7 @@ namespace HeavenStudio
             SetCurrentGame(game, useMinigameColor);
         }
 
-        private void DestroyGame()
+        public void DestroyGame()
         {
             SetGame("noGame");
         }

Assets/Scripts/LevelEditor/Editor.cs

@@ -106,7 +106,7 @@ namespace HeavenStudio.Editor
 
             foreach (var minigame in EventCaller.instance.minigames.Values)
                 AddIcon(minigame);
-                
+
             UpdateEditorStatus(true);
 #if HEAVENSTUDIO_PROD
             BuildDateDisplay.text = GlobalGameManager.friendlyReleaseName;
@@ -473,7 +473,7 @@ namespace HeavenStudio.Editor
                 GameManager.instance.CursorCam.enabled = (PlayerInput.CurrentControlStyle == InputSystem.InputController.ControlStyles.Touch)
                     && isCursorEnabled;
                 GameManager.instance.CursorCam.targetTexture = null;
-                
+
                 GameManager.instance.CursorCam.rect = new Rect(0, 0, 1, 1);
                 fullscreen = true;
             }
@@ -507,12 +507,12 @@ namespace HeavenStudio.Editor
 
         public static bool MouseInRectTransform(RectTransform rectTransform)
         {
-            return (rectTransform.gameObject.activeSelf && RectTransformUtility.RectangleContainsScreenPoint(rectTransform, Input.mousePosition, Editor.instance.EditorCamera));
+            return rectTransform.gameObject.activeSelf && RectTransformUtility.RectangleContainsScreenPoint(rectTransform, Input.mousePosition, Editor.instance.EditorCamera);
         }
 
         public void ReturnToTitle()
         {
-            GlobalGameManager.LoadScene("Title");
+            GlobalGameManager.LoadScene("Title", callback: GameManager.instance.DestroyGame);
         }
 
         public void SetAuthoritiveMenu(bool state)

ProjectSettings/SatorImaging.UnitySourceGenerator.Editor.ProjectSettingsData.asset

@@ -39,5 +39,6 @@ MonoBehaviour:
   - Assets/Scripts/Games/TossBoys/TossBoys.cs
   - Assets/Scripts/Games/DoubleDate/DoubleDate.cs
   - Assets/Scripts/Games/AirRally/AirRally.cs
+  - Assets/Scripts/LevelEditor/Editor.cs
   PathsToSkipImportEvent: []
   PathsToIgnoreOverwriteSettingOnAttribute: []