Pretty fun, a good time waster. I thought the upgrades were a bit too far-spread for enjoyment, and there wasn't much of a sense of progression as compared to other upgrade-based games. I also felt like the diamonds should have come before the uranium, since some upgrades seem to call for those much sooner than you're able to get to them. I also felt you didn't quite give us enough of the upgrades either; even maxed out didn't really feel like I was doing much. It'd be nice if I could overclock the time meter too, if I collect time boosts that go over the top of the bar.