This is a shooting game where you need to kill all the enemies in then stage to progress. Every so often there is a boss you need to kill. That is pretty much all there is to this game. To be honest you might get bored with it, pretty fast... You do get to choose from 3 different shooting styles though, which might add some extra playability. You are also able to unlock an extra stage.
Controls
Z = Shoot / Yes (For Menu's) Up Arrow = Move Up Down Arrow = Move Down Left Arrow = Move Left Right Arrow = Move Right Escape = Pause / Back (For Menu's)