This sound comes from Valorant, Riot Games' tactical hero shooter released in 2020, where it plays during the pre-match agent selection phase. The line became familiar to players through countless queues, streams and highlight videos, then spread into short-form edits as a clean way to introduce a choice or cast lineup. It is still widely used because the phrase is brief, recognizable and flexible, much like other game callouts such as Enemy Spotted or Bomb Has Been Planted.