ZPAW
The Dead Walk! This universe is similar, but not identical to the universe of the George Romero Films.
If you are looking for something along the lines of Resident Evil, or Zombieland, the ZPAW stories don't quite fit that nitch. The characters learn and grow, not just get eaten. (though that will happen to some)
The focus of the stories is on the characters trying to survive, the zombies themselves are just one of the challenges they face. (You'll note that instead of horror, I classified it as Action/Adventure)
You won't find any boss monsters, secret military/industrial labs, government conspiracies or quests for a cure, just people doing the best they can to survive after the collapse of civilization.
Special Zombie Codes: Slow, Everybody Rises, Contagious Bite.
