The Mushroom Kingdom is a massive landscape, divided into several zones, that serves as the main setting area of the Super Mario Bros. video game franchise. In most of it's games, the Mushroom Kingdom starts from the Mushroom capital stage, and ends with with the Bowser's castle stage, with the latter serving as the "Big Boss" of the game.
The Mushroom Kingdom also appears in the second Disney vs. Anime Villains War, as one of the main battle sceneries.