Instructions and the scores after each level are almost impossible to read. White on pale green? c'mon. Fun concept, though, and it has mute controls, which I love.
Fun, but I found a bug after I finally lost. I can't start a new game! When I click start it gives me the blurb for the next level but the any key takes me back to the main menu.
Good graphics. Fun, fast-paced gameplay. Sound controls (good for playing at work). Only complaint is that the bosses are a little too easy; just circle-strafe till they go away.