This sound comes from Among Us, the social deduction game by Innersloth that first released in 2018 and exploded in popularity during 2020. As the game spread across streaming, TikTok and meme edits, even tiny interface sounds became recognizable on their own. The lobby join cue is still used because it communicates arrival in less than two seconds and immediately reads as a game reference. It is often paired with the Among Us role reveal sound in fan edits and short comedy clips.