Call of Duty Zombies began as Nazi Zombies in Call of Duty: World at War in 2008, developed by Treyarch, and grew into a core mode across later Black Ops games. Its mix of round-based survival, mystery box weapons and eerie audio made short zombie cues instantly familiar. Online, creators reuse them alongside other gaming staples like the enemy spotted callout and the FNAF jumpscare scream for horror edits. The brevity and aggression of this clip keep it popular for memes, montages and soundboard reactions long after its first use.