Go on an adventure with two of Nintendo’s most popular characters in Mario and Luigi: Bowser’s Inside Story, for the Nintendo DS. In this game, a mysterious disease called The Blorbs spreads across the Mushroom Kingdom. Toads that become infected inflate to many times their normal size and roll around uncontrollably. Mario and Luigi must stop these creatures from wreaking havoc on the kingdom, as well as discover the source of this affliction and put an end to it. Parts of this game feature the classic side-scrolling action, and other parts have a top-down view. This game introduces a new ranking system that allows characters to rank up after reaching a specific level. As their rank increases, they earn special bonuses, such as additional equipment slots.