Castle Oblivion is a world found in the Realm Between in Kingdom Hearts: Chain of Memories and Kingdom Hearts Re: Chain of Memories as the only real world in the game. It also appears within cutscenes in Kingdom Hearts II, Kingdom Hearts II: Final Mix, Kingdom Hearts 358/2 Days, Kingdom Hearts Birth by Sleep, and Kingdom Hearts Birth by Sleep Final Mix. It also appears as a digital copy in Kingdom Hearts coded and Kingdom Hearts Re:coded. The castle was ruled by Marluxia of Organization XIII, and consists of thirteen floors and twelve basements.