Not bad for a nice retro throwback. The controls were a little clunky, since the ship only moves from the edges of the screen to the center and back again in one keypress, so to avoid I had to keep tapping the keys back and forth to stay in one place. Just a suggestion: Try an acceleration physics routine that increases or decreases thrust with the keypress to allow better control while still retaining the difficulty of handling momentum. Besides that, the graphics were good and the sound was standard for a retro game. All in all, I give this game a 3.