Sprunki is a fan-made browser mod inspired by Incredibox, where players stack cartoon characters to build beats. It exploded across video platforms in late 2024, with Phase 2 becoming famous as the horror toggle that turns the cute cast into distorted, creepy versions of themselves. Durple, the purple dragon-like character, became a fan favorite, and his Phase 2 loop is widely ripped for remix videos, animations and soundboard collections. It endures because creators use Phase 2 sounds as shorthand for a mix flipping from playful to unsettling.