The overworld theme from Super Mario Bros., composed by Koji Kondo for the 1985 Nintendo game, is one of the most recognized melodies in gaming. This horror version follows a long online trend of slowing, pitching down and distorting nostalgic game music to make it sound eerie. Shared on soundboards and in fan edits, it works because the original is so cheerful and familiar. Creators keep reusing it for creepy pasta style videos, horror remixes and ironic scares where innocence turns sinister.