This sound is commonly identified by fans as a beep from Five Nights at Freddy's 6, also known as Freddy Fazbear's Pizzeria Simulator. Short interface and alert sounds from FNAF games spread widely through fan edits, reaction videos and horror compilations because they instantly signal tension without taking over the scene. This kind of beep stays popular because it is brief, recognizable to the community, and easy to drop next to other iconic FNAF audio such as a FNAF jumpscare scream.