Little is documented about the exact origin of this R.E.S clip, so it circulates mainly as a user shared game sound on soundboards and in editing packs. The 5+ label signals a multi kill threshold, which helped it spread among FPS and fighting game creators who wanted a punch sound style marker for a streak. It is usually shared as a short MP3 for quick drops into streams and shorts, and it stays popular because the knockout meaning is understood instantly, even without any visual context from the original game.