Among Us is a multiplayer social deduction game developed by InnerSloth and released in 2018, which became a global hit in 2020 through streamers and short-form video. Vents are a core mechanic on its spaceship maps, letting impostors travel secretly between rooms while crewmates complete tasks. Clips of vent moments spread widely on TikTok, YouTube and Twitch, turning the sound into shorthand for sneaking, deception and a sudden twist. It remains popular because it instantly tells viewers an impostor move is happening without any explanation.