I understood the car game issue with camera like 2-3 days ago. If you know Unity it has Update (every frame, depends on device) and FixedUpdate (60 timer per second) and if camera and objects aren't syncronized it becomes mess like here
I didn't make close buttons for car and roguelike games because you can leave them just by dying but now I think adding the close button would be good feature
Thanks for detailed feedback!