Zombies have become as much a part of Call of Duty as weapon camos and crazy operators. If you don't feel like playing multiplayer, you can pass the time by shooting a few zombies in the head. Of course, the Easter Eggs and miracle weapons are a special incentive to spend time in this mode.
Besides a lot of excellent zombies maps, there were unfortunately a few that would have been better never developed. So, what are the worst Call of Duty zombies maps of all time?