Venturing through the endless corridors of the Backrooms, one may encounter the peculiar entities known as Partygoers. Their visage is uniquely unsettling: yellow skin, square-shaped heads directly fused into bag-like bodies without any neck, and seemingly empty holes for eyes. Their mouths resemble distressing tears in their facial skin, and they always carry a trademark red balloon. When they materialize, they do so en masse, surrounding Wanderers while performing a haunting serenade that gradually gnaws at the listener's sanity. Encountering these figures introduces a strict rule into the fray: all present Partygoers must be engaged before turning attention to any other entities.