But zombies are still fresh!
Alien zombies done
Nazi Zombies done
Medieval Zombies done
But there is still room left for creativity!
Zombiebabes!
Zombiecats!
Zombiedogs!
Zombieworms!
A MMORPG with zombies only, fresh players are fresh meat and get infected from old playerbase.
Zombiecars!
Veggie Zombies!
Invisible silent zombies!
Immortal zombies, without head (you can not kill them, because they have no brain)!
Bicycle Zombies!
Paperboy Zombies!