diff --git a/extensions/community/WithThreeJS.json b/extensions/community/WithThreeJS.json
index 9432fcb0..e57c50db 100644
--- a/extensions/community/WithThreeJS.json
+++ b/extensions/community/WithThreeJS.json
@@ -8,7 +8,7 @@
   "name": "WithThreeJS",
   "previewIconUrl": "https://resources.gdevelop-app.com/assets/Icons/rotate-3d.svg",
   "shortDescription": "Create a simple 3D scene.",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "description": [
     "Extension for GDevelop to create simple 3D scenes.  ",
     "This extension is intended for easy and simple 3D rendering. It does not currently aim for realistic 3D rendering.  ",
@@ -1233,7 +1233,7 @@
             "textG": 0,
             "textR": 0
           },
-          "comment": "Commented out to always use built-in 3D. (GDevelop v5.2.173 and PixiJS v7.3.0 or later)"
+          "comment": "This is the magic comment out that always enables built-in 3D. (GDevelop v5.2.173 - v5.2.176 (?) and PixiJS v7.3.0 or later)"
         },
         {
           "disabled": true,
@@ -1405,9 +1405,23 @@
             "} else {",
             "  // v5.2.173 対応した v1.0.1 以降は使用されないはず",
             "  console.log(\"[WithThreeJS] Built-in 3D is disabled. (LEGACY MODE)\");",
-            "  // GDの背景を黒くした上で透明にする",
-            "  runtimeScene.setBackgroundColor(0,0,0);",
-            "  runtimeScene.getRenderer().getPIXIRenderer().backgroundAlpha = 0;// For PixiJS 6",
+            "  // GDの背景を黒くした上で透明にする（v1.0.2 で廃止）",
+            "  // runtimeScene.setBackgroundColor(0,0,0);",
+            "  // runtimeScene.getRenderer().getPIXIRenderer().backgroundAlpha = 0;// For PixiJS 6",
+            "  // 警告表示",
+            "  let AlertElement = document.createElement('div');",
+            "  AlertElement.innerHTML = `<strong>Warning from WithThreeJS</strong><br>",
+            "  Please add an \"Enable WithThreeJS\" object to a scene.<br>",
+            "  For more information, <a href=\"https://pandako.itch.io/with-threejs-extension-for-gdevelop/devlog/631434/about-the-warning-please-add-an-enable-withthreejs-object-to-a-scene\" target=\"_blank\" style=\"color:yellow\">please click here</a>.`;",
+            "  AlertElement.style.position = \"absolute\";",
+            "  AlertElement.style.zIndex = 999;",
+            "  AlertElement.style.top = 0;",
+            "  AlertElement.style.left = 0;",
+            "  AlertElement.style.backgroundColor = \"red\";",
+            "  AlertElement.style.color = \"white\";",
+            "  AlertElement.style.padding = \"0.5em\";",
+            "  document.body.appendChild(AlertElement);",
+            "  return;",
             "}",
             "//",
             "const ProjectionScale = eventsFunctionContext.getArgument(\"ProjectionScale\") || 1;",
@@ -12725,6 +12739,7 @@
       "defaultName": "My3DBox",
       "description": "This 3D Box can have different textures on 6 faces.\n⚠️ This object is high load.",
       "fullName": "3D Box (Experimental)",
+      "is3D": true,
       "name": "Box3D",
       "eventsFunctions": [
         {
@@ -13422,7 +13437,6 @@
           "assetStoreId": "",
           "height": 32,
           "name": "Top",
-          "tags": "",
           "texture": "",
           "type": "TiledSpriteObject::TiledSprite",
           "width": 32,
@@ -13434,7 +13448,6 @@
           "assetStoreId": "",
           "height": 32,
           "name": "Bottom",
-          "tags": "",
           "texture": "",
           "type": "TiledSpriteObject::TiledSprite",
           "width": 32,
@@ -13446,7 +13459,6 @@
           "assetStoreId": "",
           "height": 32,
           "name": "Front",
-          "tags": "",
           "texture": "",
           "type": "TiledSpriteObject::TiledSprite",
           "width": 32,
@@ -13458,7 +13470,6 @@
           "assetStoreId": "",
           "height": 32,
           "name": "Back",
-          "tags": "",
           "texture": "",
           "type": "TiledSpriteObject::TiledSprite",
           "width": 32,
@@ -13470,7 +13481,6 @@
           "assetStoreId": "",
           "height": 32,
           "name": "Left",
-          "tags": "",
           "texture": "",
           "type": "TiledSpriteObject::TiledSprite",
           "width": 32,
@@ -13482,7 +13492,6 @@
           "assetStoreId": "",
           "height": 32,
           "name": "Right",
-          "tags": "",
           "texture": "",
           "type": "TiledSpriteObject::TiledSprite",
           "width": 32,
@@ -13490,7 +13499,43 @@
           "effects": [],
           "behaviors": []
         }
-      ]
+      ],
+      "objectsFolderStructure": {
+        "folderName": "__ROOT",
+        "children": [
+          {
+            "objectName": "Top"
+          },
+          {
+            "objectName": "Bottom"
+          },
+          {
+            "objectName": "Front"
+          },
+          {
+            "objectName": "Back"
+          },
+          {
+            "objectName": "Left"
+          },
+          {
+            "objectName": "Right"
+          }
+        ]
+      }
+    },
+    {
+      "defaultName": "Enable_WithThreeJS",
+      "description": "Adding this object to your project will enable WithThreeJS in all scenes.\nThere is no need to place this in the scene.",
+      "fullName": "Enable WithThreeJS",
+      "is3D": true,
+      "name": "EnableWithThreeJS",
+      "eventsFunctions": [],
+      "propertyDescriptors": [],
+      "objects": [],
+      "objectsFolderStructure": {
+        "folderName": "__ROOT"
+      }
     }
   ]
 }
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