Left 4 Dead was released by Valve in 2008 as a co-op first person shooter about survivors fighting waves of infected. Its short warning stings and combat cues became familiar to players who spent hours calling out threats, much like an enemy spotted alert or a FNAF jumpscare scream in other horror games. Clips from the game later spread through YouTube edits, streams and soundboards, where this cue survived because it instantly recreates that feeling of a run going wrong within a single second of audio for viewers.