Cell Defense

Tom hasn't been taking care of himself, so now there are tons of bacteria on the prowl trying to kill him! As the commander of Tom's immune system, you are going to help him defense the bacteria!
Instruction: Click a cell tower to place it on the wall. Every bacterium you kill will provide a core: use them to build new cell towers or upgrade existing ones. Prevent incoming waves of bacteria from passing to keep Tom healthy. If Tom's health hits 0%, it's game over!