Dota 2, Valve's team-based battle arena game, gives almost every important status change its own sound, and invulnerability is one of the most recognisable. The cue tells players instantly that damage will not land, which matters in fast team fights where a split second changes the outcome. As gameplay clips spread on video platforms, editors began lifting the sound out of its original context and using it as shorthand for being untouchable. That simple meaning is why it still appears in gaming montages, reaction edits, and short-form memes years after players first heard it in matches.