The Jetpack physics are kinda bad and the game is too short. it lacks a leader board. My game also uses a jetpack and the jetpack is more controllable. You should try to replicate those physics.
My intention was to make it a bit less stable to control but I agree that it's not as polished as it should be. Played your game, it looks good, but honestly it's sometimes difficult to distinguish between background and foreground elements. More contrast would make it a bit more obvious.
