I think it's well done, but I didn't quite understand the mouse part; the mice kept appearing and never seemed to end. Also, there were times when I killed two of them at the same time, and the sounds got mixed up. You could perhaps use an if statement in the sound code to check if it's playing, because the sound distorts in headphones when they play simultaneously. The game is fun, yes, but I didn't really feel like I was controlling the rocket either. It felt more like I was just spinning around.