So im not sure how good you are at coding or using rules so ill just suggest something simple: make a game where you have to fix this guy’s house and basically you see broken sinks, fridge, toilet, fan, ac unit, etc. and when you click on it, it zooms in and you have to draw like a tool or a part for the object that you’re fixing. After you fix it you can see your drawing on the item and you see an animation of the owner of the house celebrating and he shows his gratitude by giving you money. The more money you earn, the more better houses you can fix. You can just think of the rest because I think I gave more than enough details so good luck!