This sound comes from Among Us, the social deduction game developed by Innersloth. The game originally launched in 2018, and its sounds spread widely online during the huge Among Us boom in 2020, when clips, streams, and memes flooded TikTok, YouTube, and Discord. The round start cue stayed useful because it immediately tells viewers that a game is beginning, even in very short edits. It is still used in gaming memes, lobby intros, and parody videos that borrow the tense setup of Among Us.