Great game, but you'll need a heavy-duty mouse.
First, let me get one thing straight--this is a GREAT game. The movement control is flawless, the powerups are good, the storyline is wonderful, and the music rocks. One of the neatest features of this little gem is the constantly-changing background which switches from outer space to the entry of a gas-giant's atmosphere to the planet's rocky core to several other great scenes.
However, the game isn't perfect. While the background graphics are well-done in classic Flash style, the actual ships(and characters) look as if they have been done in MSPaint or some other bare-bones image editor. Also, there's no autofire, a major minus for whoever plays it on a laptop touch-pad like I did. Your index finger will feel ready to fall off by the time you get around to beating the game. Perhaps there will be autofire in a future version.
As it is, this game is wonderful, but it could be even better with some graphics and control polish.