The cue comes from Konami's Metal Gear Solid series, first released in 1998, where stealth is central and detection changes the whole mission. The sound was designed to give players immediate feedback that they had been seen and needed to hide or fight. Clips of gameplay spread the sound beyond the games, and editors began reusing it in meme videos, streams and compilations. Its link to being spotted remains instantly understood even by people who have never played the series, which keeps it popular for surprise reveals.