The CS:GO flashbang sound comes from Counter-Strike: Global Offensive, Valve's 2012 tactical shooter, where a flash grenade blinds players and leaves a ringing aftermath. That audio cue became memorable through match highlights, frag movies, stream clips and reaction edits far beyond the game itself. It is still widely used because the effect communicates instant disorientation in less than two seconds. It often appears alongside other Counter-Strike audio like Enemy Spotted or Bomb has been planted in gaming meme edits.