Sprunki is a fan-made music game inspired by Incredibox, where players mix beats by assigning sounds to colourful characters, and its horror mode reimagines those same characters in darker, corrupted forms. Clips of Sky in this mode spread through gameplay videos, edits and soundboards, where fans reuse the eerie loop to signal that something has gone wrong. Its popularity comes from that contrast between a cute music game and its unsettling alternate version, a tension also found in horror game sounds like the FNAF jumpscare, making it a shorthand for creepy fan-made content.