Mario Adventure III

The Malice Mushrooms have spread through Bowser's Kingdom, and Bowser has decided Princess Peach and her Mushroom Kingdom are responsible. War has been declared. Mario is dispatched on an unofficial mission to clear the Malice infestation from Bowser's territory — proof that Peach had nothing to do with it, and the only thing standing between two kingdoms and an open conflict nobody wants. Travel through the Koopa Kingdom and remove the infection before it causes more damage than it already has.