Undertale is an independent role-playing game created by Toby Fox and released in 2015, known for its music, humour and choice-driven story. The Ruins is its opening area, a quiet underground home where players first learn the game's rules before stepping into the wider world. Resetting lets players begin again, so leaving the Ruins has become a shorthand among fans for starting over after learning something important. The short clip circulates in fan edits, streams and soundboards because that bittersweet first departure still resonates with players who remember their first playthrough.