This should be in the sponsored games section, but that aside, it's superb. 2 things I'd like to see change, as it tires quickly. One, is some objective. Just beating wave after wave gets boring fast. We are inundated with "defend against wave after wave of baddies" games, so something to set it apart would be nice. Another thing, is the weapon system. Instead of just replacing the weapon you have, let us select which we want after we pick them up...or have subsequent pickups be upgrades to weapons.