Project: Playtime is a multiplayer horror game set in the Poppy Playtime universe, where players survive toy monsters while completing puzzles, and Boxy Boo is one of its most recognisable threats. The jumpscare plays when Boxy Boo catches a player, turning a tense chase into an abrupt, loud defeat. Clips of the moment spread through gameplay videos, streams and short horror edits, where fans reuse the sound outside the game for pranks and reactions. Like the FNAF jumpscare scream, it stays popular because a single sudden noise can instantly signal danger and surprise.