Undertale is an indie role-playing game released in 2015, built around its distinctive soul mechanic, in which the player's heart represents their soul during bullet-hell battles. Short retro sounds from its battles and menus became widely shared by fans on soundboards, reaction videos and edits, because they are instantly recognisable even without visuals. This brief soul clip fits that pattern, offering a compact audio shorthand for Undertale itself. It remains popular because it is easy to place, easy to recognise and works across gameplay clips, memes and fan animations.