Troubleshooting
Objects and physics
| Problem | Try |
|---|---|
| The player falls through the floor | The floor needs a Collider, and a static Physics body. Turn on Colliders in the viewport to check the shapes. |
| Nothing moves with the joystick | The object needs a movement behavior (Platformer, Top-down, Car). Platformer and Car need a dynamic Physics body. Check the joystick is on in Touch controls. |
| My character walks backwards | Toggle Faces forward on its Shape & look. |
| It tips over / rolls away | Tick Don’t tip over on its Physics body. |
| Coins block the player instead of being collected | Tick Trigger only on the coin’s Collider. |
| A car drives on invisible wheels | Pick the wheel nodes in the Car behavior’s Wheels. |
| Something is too dark | Raise Ambient strength (Scene tab), add a Sky light, or check the Sun’s rotation. |
Events
| Problem | Try |
|---|---|
| An event has a red badge | Tap it to see the problem — usually a renamed object or variable, or text without "quotes". |
| “Variable doesn’t exist yet” | Create it (Scene tab, or ＋ New variable… in the action). Names are case-sensitive. |
| All coins disappear instead of one | Make sure the event has a condition that picks the coin (e.g. On collision with Coin) — actions on an unpicked type affect all instances. |
| An action runs again and again | Non-trigger conditions are checked every frame. Add Trigger once while true, or use a ⚡ trigger. |
| I can’t tell if an event runs | Add Log to console and open the console in Play mode. |
Export and install
| Problem | Try |
|---|---|
| “App not installed” when updating | The new APK must have the same package name and be signed with the same key. Restore your key backup, or uninstall the old app first. |
| Android blocks the install | Allow installing unknown apps for the app you opened the APK from (Files, Drive, chat). |
| The exported game has no sound | Tap the Tap to play screen — browsers only allow sound after a touch. |
The app
| Problem | Try |
|---|---|
| The free libraries don’t load | They need internet. Once added, models and sounds are stored in your project and work offline. |
| I lost a project | Projects live only on the phone. Import your latest .tge backup. |
| Something else broke | ? → Report a problem sends the developer an email with the app’s recent error log. |