Pandemic II
Game Description:
Like Pandemic, in the sequel you engineer a disease (viral, bacterial, parasitic) in this simulation game of death. More specifically, you play the role of an intelligent (thing) that can choose how to evolve into the nastiest, most horrible (thing) ever. Does it have anything to do with zombies? No, but it might help us understand more about how zombiism spreads.
Yes, I stole this description from Pandemic. What do you want from me?
This zombie game has been reviewed! If you care in the slightest about what we thought of this game, check out the review for it.