The controlled shock mechanic was introduced in Five Nights at Freddy's: Sister Location and returned in Five Nights at Freddy's AR: Special Delivery, released in 2019. Players use controlled shocks to stop attacking animatronics, including the bare Endoskeleton, when other tools fail. Clips of the zap spread through FNAF gameplay videos and soundboards alongside the FNAF Jumpscare Scream, turning a defensive game action into a reusable reaction sound. It remains popular because Freddy's fans instantly recognise the electrical hit and associate it with danger, discipline and malfunctioning animatronics.