The 6 AM sound comes from the original Five Nights at Freddy's, released in 2014 by Scott Cawthon. In the game, it plays when the player survives until morning and completes the night. Because FNaF became a huge online horror game phenomenon, this short audio spread into YouTube edits, livestream highlights, and meme compilations. It is still popular because the sound instantly communicates survival, relief, and the end of tension to anyone familiar with the series, much like a FNAF Jumpscare Scream signals the opposite outcome.