I'm not sure why, my toaster ran this like a PAL game on an NTSC screen. Anyway, it's a good base for a game, but there's still a lot lacking. Particularly I'd like to see more variety in patterns. The first and second bosses don't feel much different from each other (they both have slow dodging patterns and move up and down, except one has a laser and another fires an object at your face). And this game has great art, but I find the background far too noisy for this sort of game; it draws too much attention to itself.