Post-Shift is a fan-made horror game inspired by Five Nights at Freddy's, featuring redesigned Nightmare Classic Animatronics that attack with sudden screen-filling scares. Its first jumpscare sound follows the same tradition as the classic FNAF jumpscare scream, using a piercing shriek to punish a missed cue and end a run. Clips of the scare spread through gameplay videos and horror edits on video platforms, where creators reuse the audio out of context for pranks and memes. It remains popular because the hit is instantly recognisable to FNAF fans.