In the Mushroom Kingdom was attacked by evil Bowser and now the main character of the game is necessary to fend off this strong boss. He takes in his arms the vault strengthened gun and sent into danger. However, the weapon breaks along the way, and he had to produce guns again and again. Accompany Mario on the road, so that he died before gets to his foe. Collect along the way guns, kill the poisonous mushrooms, and of course top up the bonus account Mario golden stars.