Call of Duty: World at War: Nazi Zombies (also known as Call of Duty: Zombies) is a first-person shooter

First-person shooter

First-person shooter is a video game genre that centers the gameplay on gun and projectile weapon-based combat through first-person perspective; i.e., the player experiences the action through the eyes of a protagonist. Generally speaking, the first-person shooter shares common traits with other...

 video game developed by Ideaworks Game Studio

Ideaworks Game Studio

Ideaworks Game Studio is a video game developer based in London, UK. Founded in 1998, originally trading as Ideaworks3D the studio has a heritage of developing high-end native cross platform technology and games for the iPhone and Smartphone markets...

, and published by Activision

Activision

Activision is an American publisher, majority owned by French conglomerate Vivendi SA. Its current CEO is Robert Kotick. It was founded on October 1, 1979 and was the world's first independent developer and distributor of video games for gaming consoles...

 for iOS. It is a spin-off

Spin-off (media)

In media, a spin-off is a radio program, television program, video game, or any narrative work, derived from one or more already existing works, that focuses, in particular, in more detail on one aspect of that original work...

 of the Call of Duty

Call of Duty (series)

Call of Duty is a first-person and third-person shooter video game series franchise, created by Ben Chichoski. The series began on the PC, and later expanded to consoles and handhelds. Several spin-off games have also been released...

series, and based on the "Zombie

Zombie

Zombie is a term used to denote an animated corpse brought back to life by mystical means such as witchcraft. The term is often figuratively applied to describe a hypnotized person bereft of consciousness and self-awareness, yet ambulant and able to respond to surrounding stimuli...

s" mode of Call of Duty: World at War

Call of Duty: World at War

Call of Duty: World at War is a first-person shooter video game developed by Treyarch and published by Activision for PC, PlayStation 3, Wii, and Xbox 360. It is generally considered to be the fifth mainstream game of the Call of Duty series and returns the setting to World War II. The game was...

. The game was released worldwide on November 16, 2009. The game allows for multiplayer cooperative gameplay

Cooperative gameplay

Cooperative gameplay is a feature in video games that allows players to work together as teammates. It is distinct from other multiplayer modes, such as competitive multiplayer modes like player versus player or deathmatch...

 locally via an ad hoc

Ad hoc

Ad hoc is a Latin phrase meaning "for this". It generally signifies a solution designed for a specific problem or task, non-generalizable, and not intended to be able to be adapted to other purposes. Compare A priori....

 Wi-Fi

Wi-Fi

Wi-Fi or Wifi, is a mechanism for wirelessly connecting electronic devices. A device enabled with Wi-Fi, such as a personal computer, video game console, smartphone, or digital audio player, can connect to the Internet via a wireless network access point. An access point has a range of about 20...

 or Bluetooth

Bluetooth

Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances from fixed and mobile devices, creating personal area networks with high levels of security...

 network, or globally via the internet. But restrictions can turn multiplayer off. It will offer purchasable downloadable content

Downloadable content

Downloadable content is official additional content for a video game distributed through the Internet. Downloadable content can be of several types, ranging from a single in-game outfit to an entirely new, extensive storyline, similarly to an expansion pack. As such, DLC may add new game modes,...

 in the form of new maps in the future.

The game's setting originally takes place in a German bunker (Nacht der Untoten) during World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 from the viewpoint of a United States Marine

United States Marine Corps

The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

. SS soldiers

Schutzstaffel

The Schutzstaffel |Sig runes]]) was a major paramilitary organization under Adolf Hitler and the Nazi Party. Built upon the Nazi ideology, the SS under Heinrich Himmler's command was responsible for many of the crimes against humanity during World War II...

who have become zombies attempt to infiltrate the bunker and attack the player, and the player must defend themselves in the process.

Gameplay

From a first-person perspective, the player must kill zombies. The player can shoot them, throw a grenade at them, or kill them with a knife. Weapon outlines can be found all around the map that give the player guns and ammo to kill the zombies in exchange for some of the player's points.
The zombies enter the map by destroying barricades that were set up by the soldier or entering through holes in the walls/ceiling. The player can repair destroyed barricades, receiving points. Rooms in the map can be accessed for 750 points, 1000 points or 1250 points.
Points are used throughout the game to for various purposes including buying weapons, activating teleporters, and buying "perks". Players can earn points by by killing zombies or repairing barricades.