I quite enjoyed this game, in fact i got to the point where i over upgraded my booster and immediately shot into the sky and now i'm at like 10k altitude and 90 distance! ><
I loved the changes to the player character, especially the wing suit :D
I wish there was some audio effects, maybe some textures on the ground and buildings, and perhaps some type of scrolling background so i knew i was flying sideways or upwards. Likewise, I would have loved some particles or similar indication that I was boosting.