The alert originated in Metal Gear Solid, released for PlayStation in 1998 and directed by Hideo Kojima. In the game it fires when a guard enters alert phase after seeing Snake, accompanied by a red exclamation mark and a shift in music. As stealth gameplay clips and parodies spread online, the sting became shorthand for an enemy spotted moment far beyond the series. Its brevity and instant recognisability have kept it in meme edits, streams, and soundboards decades after release.