Working title: Sick Bay (android/ios)
Back story: The basic premise is a futuristic setting in which humans are each given a nanobot that travels throughout the body, keeping the human healthy. When these droids malfunction, the human is sent to "Sick Bay" where a micro-pod is injected to find and stop the faulty nanobot from slowly turning the human's insides to metal.
Game play: Avoid destroying the healthy red cells when possible (any destroyed red cells count against your score in the end). Shoot the enemies with your stockpile of missiles (get more missiles from yellow capsules).