Verrückt was the second Zombies map released for Call of Duty: World at War in 2009, set in a Berlin asylum and known for introducing perks and power traps to the mode. Its game over music became familiar to early Zombies players who heard it after long survival attempts ended. As Zombies clips and edits spread on YouTube and later short-form platforms, the cue was lifted beyond gameplay and reused as a standalone sound for defeat, keeping its association with the mode's tense, hopeless endings.