Sprunki is a fan-made browser music game inspired by Incredibox, where players layer cartoon characters' loops into a track, and its unofficial horror mode turns every cheerful performer into a corrupted nightmare. Mr Fun Computer, the grinning retro monitor mascot, became a fan favourite in that mode, and clips of his warped audio spread through YouTube Sprunki horror compilations and TikTok edits. Like other computer error sounds, it stuck around because the contrast between a friendly computer face and rotting digital audio makes an instant, recognisable scare cue.