A-25 comes from Interminable Rooms, a Roblox horror survival game in the style of Doors where players move through endless rooms while avoiding entities. Its jumpscare sound is ripped directly from the in-game encounter and circulates widely among Roblox horror fans. Clips of A-25 chases and deaths appear in YouTube compilations, TikTok edits and Discord soundboards, where the audio is reused as a generic shock effect. It remains popular because it is instantly recognizable to players and works as a punishing meme scare even for viewers who never played.