Great Game!
The art and design of it was what kept me going! I had no reason to stop, untill I bought everything and the game won't finish. I'll elaborate: I think it would've been more rewarding if you had to reach a certain lenght or so. The achevements don't do the trick. Reaching that would display a "you won" thing, and you could still play. Also:in the end one launch can virtually last forever and the only thing to stop it is bad luck. So I would've kept playing if i could've de-upgade cannons and jetpacks, like the guns do, so that i would test my abilities. Anyway, this isn't a bad comment at all! Just... I might be sad cause it's over. :D Awesome work!