Sprunki is a fan-made mod of the music game Incredibox that became widely shared online for its mix of cute characters and beatmaking. Its hidden horror mode transforms the cast, including the bucket-wearing character Brud, with darker visuals and distorted sounds. Clips of the transformation spread through gaming videos and fan edits, where the contrast between the normal and horror versions became the main appeal. Brud's horror loop stayed popular because it is recognisable in seconds and works even outside gameplay as a general creepy reaction sound.