ONaMC is a fan-made horror game built directly on the Five Nights at Freddy's formula of static cameras, lurking animatronics and sudden jumpscares. Its scream follows the same design as the original FNAF jumpscare audio, a loud distorted shriek meant to punish a missed camera check. Clips of the scare were ripped and shared across soundboard sites and meme edits, where FNAF audio has stayed popular for over a decade. Creators keep using it because it is short, instantly recognisable to horror fans and reliably startling in prank compilations.