Its actually a nice concept, I especially like the transisions of the scenes.

The upforce of the jet pack is way to strong though, this makes the game very hard. You could also change your collision mode (change the collisionDetectionMode to continuous on your rigidbody), this makes collision more accurate.

You did a great job overall, congrats ;)

Cool game with an unique concept i love it

This bug of flying makes it really hard to play, i found the movement nice but there's a visual glitch that the camera shakes when moving, testing is a really important part of software development to find bugs and some other things and sometimes we dont want to spend time on it,  overall i can see where you wanted to go with the game so good job :D