This was a fun one. A straight forward "shoot 'em up" that also requires a bit of strategy. The controls are a bit tough to get used to. You have to move using the keyboard to drive and the mouse to target and shoot, something that doesn't sound terribly difficult but ends up being a bit more challenging in practice. The $6.99 price tag is quite reasonable for a game that has such clean,colorful graphics and is sufficiently challenging to play.