FGNAC2 is the fan made horror follow up Four Golden Nights at Caine's 2, inspired by the animatronic jumpscare formula popularised by Five Nights at Freddy's. Its numbered stings circulate separately from the game on soundboards, where players collect each variant like the classic FNAF jumpscare scream used across fan games. Sound 4 became a reusable shorthand in that community because it works outside its original scene, no setup or character introduction is needed for viewers to read the loud burst instantly as a parody or tribute scare.