Mario's off on his biggest adventure ever, and this time he's brought along a friend. Yoshi the dinosaur teams up with Mario to battle Bowser, who has kidnapped Princess Toadstool once again. Guide Mario and Yoshi through nine peril-filled worlds to the final showdown in Bowser's castle. Use Mario's new powers and Yoshi's voracious monster-gobbling appetite as you explore 96 levels filled with dangerous new monsters and traps. Climb mountains and cross rivers, and descend into subterranean depth...