The sound comes from Five Nights at Freddy's 4, the 2015 horror game in Scott Cawthon's FNaF series. Players hear it when they reach 6 AM and complete a night, which made it memorable because it follows long stretches of tension and listening-based gameplay. Online, the clip spread through FNaF edits, gameplay compilations, and meme videos as a shorthand for surviving until the end. It is still popular with fans who also use sounds like the FNAF Jumpscare Scream for contrast between panic and relief.