Zombies first appeared as a bonus mode in Call of Duty: World at War in 2008, developed by Treyarch, and quickly became a defining part of the series across Black Ops and later games. Short clips from its rounds, hits and undead attacks were ripped and shared on soundboards as instant reactions for gaming videos. This clip sits alongside other game scare staples like the FNAF Jumpscare Scream, used whenever creators need a fast, familiar burst of horror without any dialogue or explanation.