Mario and Luigi are enjoying a lazy afternoon at their house when they hear the
terrible news: Princess Peach has been kidnapped! The two brothers head
straight for Bowser's castle to get her back, but Bowser is just as surprised
about Peach's kidnapping as they are. At that moment, a strange top-hatted
villain warps in and abducts everyone but Mario. The mysterious villain then
forces Peach and Bowser to get married, creating a rift of dark energy that
threatens to tear the universe apart! Only Mario can save the day...but he can't
do it alone.

What at first glance appears to be your classic 2-D adventure ripped
straight from the stylized pages of the Paper Mario universe, soon turns into an
hysterical 3-D action game possible only on Wii! Early on, the 2-D side-scrolling
game play appears to be reminiscent of New Super Mario Bros. But as soon as
Mario learns the ability to flip between dimensions, players will be constantly
flipping between 2-D and 3-D to pass perilous pits, find hidden coins and
passages, and talk to characters who are visible only in 3-D.