Sprunki is a fan-made music game inspired by Incredibox, in which players build tracks by assigning sounds to a cast of colourful characters, and Mr Tree is one of that cast. Switching the game to horror mode transforms those characters into darker, damaged versions of themselves, changing both their look and their sound. Clips from that mode spread through gameplay videos, fan animations and short-form edits, where viewers recognised Mr Tree even in his altered form. That recognisable contrast between a familiar character and a frightening sound keeps the clip in regular use for horror-themed Sprunki content.