Five Nights at Freddy's launched in 2014 as an indie horror game about surviving nights in a haunted pizzeria, and its music box melody quickly became one of the series' most recognisable sounds. Fans clipped the tune for YouTube animations, gameplay edits and TikTok horror videos, where its innocent sound made sudden scares feel even sharper. It remains popular because it instantly signals FNAF to fans, while also working as a general creepy cue for anyone who has never played the games.