By the way, are you able to provide me an APK of the original Space Harrier app your mod is based on?
Viewing post in Space Harrier (Android) - Anniversary Mods comments
Sure. Here's the link of where I downloaded the game:
https://apkcombo.com/fr/%E3%82%B9%E3%83%9A%E3%83%BC%E3%82%B9%E3%83%8F%E3%83%AA%E...
By the way, this original APK leads us to an error message, as the game requires the service to run. If you want a playable version of the original game, you'd better off downloading the Legacy Mod ^^'
Also, DO NOT HOLD DOWN THE BUTTON DURING THE ERROR MESSAGE.
Because if you hold down the button, it will soft-lock your screen and you won't be able to shutdown your device without a force shutdown. So be careful!