Mindless fun.
This game was proficient in just about every important way. Good graphics, simple goals, different modes, a steady unlocking of new weapons, etc...but after awhile it kind of grates. There's no penalties, or timers, or anything which is nice at first but the lack of challenge isn't very stimulating. Also, each level is just an increase in the number of bugs you have to kill. Nothing really changes up the game, and it can get annoying when the bugs you need don't show up for 2 minutes at a time. A good game, but it needs...more.