Microbe Defense is an arcade style game where you defend your microbe by simply tapping the screen to fire a projectile at swarming enemies. Beware! You only get a single life! The goal of the game is simple: Survive 50 waves without being struck by an invader or running out of projectiles. The longer you survive, the more you are rewarded with new skins for your microbe. Reach wave 50 and unlock the next stage. Can you last 50 waves of a diabolical onslaught of microbe invaders? Your microbe awaits!