It feels really weird that you made a game that looks like it was designed for mobile devices, but shows in a landscape orientation on mobile phones by default (so, 3/4 of the screen is just black) and has no mobile controls (only keyboard).
The hitboxes for the falling stuff should be circles and not squares. Also, a lot of falling stuff does not look like it would actually end your run, like that green cup with the plus symbol - it is reasonable to think that this is actually a powerup. The objects are pretty random too - automobile tires in space, seriously?
The upgrade costs are sometimes bugged out and change if you buy a different upgrade. Had a change from 40K to 13.6K, for instance; after the next run, it became 134K and then dropped down to 43.5K and again to 13.6K when I bought another upgrade. Though maybe it is not a bug and the Rocket 4 upgrades actually cost a fraction of your current money?
I like the amount of unfolding content that your game has! Though I don't like the fact that it does not have saving :(