I played for over an hour so its got a thumbs up.
A good game, but imo, i would change/add some things. First, as others have said, the music, tolerable at first and then it gets annoying and you cant permantly turn it off. as far as the upgrades go, maybe i wasnt paying that close attention, but i didnt really notice a whole lot of difference between each upgrade. but again, it might have just been me. also, there was no story to it, no end game, like jetpack jane is racing through the city to catch a monster that is going to capture something, or she is on the run from the police bc she took something and must reach some-whatever place before they catch her. another thing, maybe add an altitude meter (altometer? idk) and a spedometer, for medals for going x mph or x ft high or something. another thing i would suggest is maybe a health meter, but i wasnt sure when it would end. what i mean is, i would bounce off car and trucks and keep going and then i would hit the ground and go through them and it would be the end of the round. so start with 100 hp and then every time you hit the ground, you lose 5hp. and lastly, i was confused about the red lines while in space or whatever you want to call it when you were very high up. Overall i did think it was a good game and i did enjoy it, everything that i said was just me throwing out some ideas.
why does the sound keep turning back on
It seems like with every bounce, the percentage that you bounce up decreases. By the end for me, even if I fall from as high as I can get, it just goes into the faceslide.