Simple
It is a very simplistic game which has its perks on one end, but cons on the other. One con being the repetitive gameplay. It never changes up and you simply find yourself going left right up down shooting with an extremely annoying laser sound. Though the animation quality is very good, the sluggish feel made me simply want to remain in a certain corner rather than trying to shoot an enemy on the other side of the screen. A perk to its simplicity is that you appreciate the animations a little more than usual.
Good thing this has a highscore choice as it doesn't really have much in the way of replay value otherwise