checked-no =>Koopa Castle: Complete Challenge Mode to unlock the Koopa Castle stadium. =>Extra Characters: To unlock extra players, you'll need to complete the Challenge Mode with specified characters. * Mario - Monty Mole * Peach - Toadette * Yoshi - Baby Luigi * Bowser - Hammer Brother * Donkey Kong - Dixie Kong * Wario - Petey Pirahna =>Extra Minigames: Complete Challenge Mode to unlock the Coin Derby and Star Dash minigames. * Toy Stadium Minigame: Beat all of the minigames in Challenge Mode, and you'll be able to purchase the Secret Map in the Challenge Mode's item shop. Buying it will create a warp pipe to the Toy Stadium minigame.