Precious Jade's Cradle comes from Limbus Company, the turn-based RPG by Project Moon and sequel in spirit to Lobotomy Corporation and Library of Ruina. Sounds and music cues from the game are widely clipped by fans because Project Moon's sound design uses short, distinctive motifs tied to specific abnormalities, items and story beats. This cradle motif became a standalone clip shared among players for edits and reactions, valued for its lullaby quality that quickly turns ominous in context.