This sound is commonly associated with Undertale, the 2015 indie RPG created by Toby Fox. Online, it is especially tied to Sans battle edits, fan animations and short gaming memes that mimic the game's fast attack timing. Its popularity comes from how instantly recognizable the Undertale combat style is and how easy the clip is to sync with cuts, flashes and sprite movement. Even outside direct Undertale content, creators still use it when they want a retro game hit that feels sudden, clean and dramatic.