The Backrooms began as an online creepypasta about endless empty yellow rooms, and Kane Pixels turned that idea into a hugely popular found-footage horror series on YouTube, where unseen entities stalk the wanderer through humming, liminal corridors. Clips of its unsettling creature noises were shared widely across TikTok, YouTube Shorts and soundboards, as creators reused them to suggest a monster just beyond the camera. The sound remains popular because it instantly signals Backrooms horror without needing dialogue or a visible creature, making it a quick shorthand for dread in short-form edits.