1 star, im sorry but there too many problems. Problems that are easily fixable but you were too lazy to do so.
#1: what do the upgrades do? Is it to much to ask for an upgrade description? you go though all this work to make the upgrades, but then don't even bother to explain them? at least give the value of what each one is worth when you collect it...
#2: money glitch, you can go into negative amount of money by clicking the coin on each upgrade. This takes out the whole purpose of the game.
#3: insane costs, with out the money glitch these upgrades would be borderline unobtainable because even with the upgrades, cash comes in really slow.
#4: boulders are to hard to see, with so much junk on the screen and it moving so fast its to easy to hit one do to the crappy controls, OR by getting suck into a pocket of boulders with no exit possible.
Sorry i usually give 3-4 stars to games with problems, but as long as they have potential. I see that this game has potential, but i also strongly feel you will never accomplish it. Since you are to lazy to fix these problems before you released the game, i doubt you will carry though on this game at all. 1 star for a dead end game that has potential that will never be utilized.