"Tank" Dempsey, John "Banana", Smokey and Paxton "Gunner" Ridge arrived at Group 935's Asylum Facility located at the Witteanu Sanatorium in Berlin, Germany in 1945 to extract American spy Peter McCain to safety. They find it overrun by zombies, and try to fight off the horde as long as they can.

In World at War, the players are the Marines, while in Black Ops and Black Ops III, they are the rest of the Ultimis crew, who were first seen in the World at War version of Shi No Numa.

Gameplay
Verrückt
Some zombies in Verrückt.

Verrückt is much larger than Nacht der Untoten, having more than triple the rooms, and features many more weapons and utilities. The most prominent features are the Perk-a-Cola machines, which mirror different multiplayer Perks, and the Power Switch. Another feature is the Electro-Shock Defenses.

Alongside only Dead of the Night from Call of Duty: Black Ops 4, Verrückt has two spawn areas, which are separated by an electric door. The door will only open if the Power Switch is activated. The map is more close-quarters than Nacht der Untoten was, having many short hallways and narrow staircases.

Zombie Behavior
In the World at War version, Zombies in this map are much more aggressive than in Nacht der Untoten. Unlike the predecessor map, zombies are now able to attack players through the barriers and will continue to do so in all maps after this one. Zombies in this map are also much faster than other maps, as well as smarter. Zombies can easily overrun players if they don't sprint with a pistol, submachine gun, or shotgun. Furthermore, the player will be downed in two swipes from a zombie, unless they have acquired Juggernog. Crawlers move quickly as well. Lastly, zombies are more likely to "double hit" the player than in Nacht der Untoten, making a zombie that gets close much more dangerous.