Nazi Zombie Info
Nazi Zombies is a game mode found in Call of Duty: World at War, Call of Duty: Black Ops. and Call of Duty: Black Ops II. The game involves the player(s) in groups of up to 4 fighting against endless waves of zombies. The games in each feature a large amount of weapons from multiplayer, plus "Wonder Weapons". These are weapons which are nearly always deadliest in the game. These include the Wunderwaffe DG-2, and the Ray Gun.
 The Pack-A-Punch Machine
In Der Riese on both Call of Duty: World at War and Call of Duty: Black Ops maps, you can put your gun into a Pack-a-Punch machine, which upgrades your gun. However, it is only advised to upgrade LMG's, as everything else runs out of ammo too fast. Another huge tip is to only pack-a-punch a weapon that is empty or near empty, because you get full ammo. You can only pack-a-punch a weapon one time, so when it runs out of ammo you need to either swap it out for another gun or try and get the same one again.
The more players there are in a game of zombies, the more zombies there will be. Hence, playing solo zombies is generally easier and less time-consuming if you know what you're doing.
There are also various power-ups available on every zombie map, that zombies will drop randomly after being killed. The following is a list of possible power-ups you can get.
Max Ammo: Restores full ammo and is always dropped after the last hellhound.
Insta Kill: Makes all zombies health extremely low for a certain amount of time. No matter what level you are on, insta kill always makes zombies a one-shot or knife kill.
Double Points: Gives twice as much points as normal for any point-rewarding action.
Nuke: Kills all zombies spawned on the map. It may take a few seconds to kill all of them so it's not recommended that you let your guard down.
Carpenter: Introduced on Der Riese, fixes all broken windows.
Fire Sale: Introduced in Call of Duty: Black Ops, it makes all random weapon boxes cost 10 points for a certain amount of time.
Bonfire Sale: Only available on the map "Five," has the same effect as Fire Sale but also makes the Pack-a-Punch machine cost only 1000 points.
Death Machine: Only available on the map "Five" and onward, it gives the player a Death Machine a miniature gatling gun with unlimited ammo for a certain amount of time.
 Zombies Speed
The Zombies have varying speeds, one of which is exclusive to Verrückt, and others that are exclusive to Shi No Numa, Der Riese, and Kino Der Toten and "Five". They are:
- A slow stumble with arms by their sides.
- A normal walk with their arms waving in the air and their faces glancing upward at the sky.
- A jog with arms straight out (like Frankenstein and in older classic Zombie films).
- A sprint, with one arm in front of them pointing down and the other behind them in the air.
- In Verrückt, some zombies have a sprint-like speed with their shoulders forward and arms moving as a person would while running (although to less of an extent). These are considerably faster than any other speed, and run at roughly the same speed that the player does with a pistol (without sprinting). Any other gun class requires the player to sprint in order to not get caught by them.
- In Shi No Numa, some zombies walk in a Karate-like stance, a reference to them being Japanese.
- In Nacht Der Untoten, Verrückt, Der Reise and Kino der Toten, some zombies walk like they are marching, an obvious reference to Hitler's troops.
- In Kino der Toten and "Five" , some zombies in the early rounds limp.
- In Black Ops, the last zombie alive will go from a regular walker to a runner when shot (this is most common on Kino Der Toten).
- In the iPhone version, after a minute or so of chasing, zombies begin to sprint.
The zombies seem to have reverted to a primal cognitive state, as they will attempt to kill or incapacitate any human through melee attacks. They are unable, or possibly unwilling, to use any weapons, and will neither dodge bullets nor avoid grenades. Even when both legs are blown off, the zombies will continue to crawl and attempt to kill any living human. The zombies also show an odd behavioral characteristic in the sense that they will not attack a human being that is downed, yet instead go for the humans still alive. It is unknown why this is done, but it may be a thought process in what's left of their primal mind that the humans that are still healthy pose them a threat. It is also thought that since the player is on the ground, the zombie thinks that the player is dead. As shown by the Der Riese radio messages, the zombies were meant to be controlled, but they would always end up going berserk.
Some zombies will die from only a few rounds from an M1911, while other zombies can withstand up to or exceed two blasts from a Ray Gun. This depends on the round as the zombies have more health in later rounds. Zombies also have varying movement speeds, from a slow stumble to an outright dash. In Verrückt and in Black Ops, the zombies seem more evolved, being able to reach through boarded windows and swipe at the character, and can hop on and off of window sills. It can also be noted that in Verrückt, some zombies march to the windows, as if marching with an army. Finally, (again in Verrückt) the Zombies seem to have evolved enough to attain the ability of speech, or at least, something that can be considered speech. The zombies are often heard shouting, "Sam!" and scream, laugh and yell more than just moan like in Nacht Der Untoten (See here for complete sounds). Zombies that are seen marching and some with brighter Nazi bands on their right arm (which sometimes is covered by a rolled up sleeve) are usually found to be carrying power-ups, such as Insta-Kill, Nuke, Carpenter, Fire sale (Black ops only), and Max Ammo. The zombies also look different from each other. Some look as if they were burned to death, some look intimidating, while some are missing arms, or even have exposed bloody rib-cages. On Verrückt zombies sometimes appear to have staples inserted into their head, giving the assumption they died during brain surgery.
World at War:
Black Ops II: