Simple.........
Simplicity is sometimes the best way, and this game displays it, although not as good as some other recent additions of the same type, it has the addictive feel that a flash game should have. As I started, I refused to stop because it drew me in to try making it on to the next wave. With Artistic clean-up and some multiple controls with limited amounts of special weapons (instead of times) this could be a 9-10 in my book.