A single player action RPG (Role-playing Game),
Mario & Luigi: Bowser's Inside Story takes players on the DS literally into the belly of the beast - that beast being Bowser. Set within an off-the-wall storyline that turns the world of Nintendo on its ear and featuring the ability to toggle between playing as the team of Mario and Luigi, and playing as Bowser himself, this third installment of the
Mario & Luigi franchise is not to be missed.

Split play time between Bowser.
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And the team of Mario & Luigi.
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Two stories and gameplay paths that can affect each other in real-time.
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Mario & Luigi: Bowser's Inside Story is an atypical one in the world of Mario and Luigi in that the two plumbers team up with Bowser for the good of the Mushroom Kingdom, even if Bowser is totally unaware of it. As the game opens the Mushroom Kingdom is seen to have been struck by a sort of infection known as "The Blorbs," and exposure to it has caused out of control physical ballooning of the Toads. A council of the who's who in the Kingdom, including Mario and Peach, is assembled to try and figure out what to do about it, when right on queue, in barges Bowser, intent on dragging away Peach. He is stopped and shown the door by Mario, but later is tricked by the villain Fawful to eat a "Lucky Mushroom." Brainwashed by this, he returns to the council where the mushroom causes all the council to ...