Mario and his friends will commence a frenzied competition at the drop of a party hat-or even a Star. This time around, the Mushroom Kingdom crew is partying down to figure out who deserves to keep the Millennium Star which has just fallen into Princess Peach's courtyard. Mario, Luigi, Peach, Yoshi, Wario and DK decide to solve their dispute in the only logical manner: by playing board games filled with challenging four-player mini-games!