Call of Duty Zombies became a huge side mode within the Call of Duty series after players discovered Nazi Zombies in Call of Duty: World at War in 2008. Since then, short Zombies audio cues have circulated widely in edits, montages and reaction memes, especially among players who grew up with Treyarch-era maps. Even when an upload does not name the exact cue, fans still recognize the general Zombies atmosphere right away. That nostalgia keeps these sounds popular in gaming posts, often alongside the FNAF Jumpscare Scream.