Somebody needs to make this a third and first person shooter. This could be big. 0_o Or Just a game with a concept of defending the body as certain individual cells. From the cells perspective, like a soldier.
I call it infectors versus defenders Defenders are the immune system ( sometimes fictional to balance out the viruses) The others are germs bacteria viruses an more
Its basically what cancer is. In short cancer is a group of cells that didn't follow their normal orders and spread throughout the body and cause harm to it.