Mario Superstar Baseball Game Cheats ( Game Cube ) Grand Prix mode
Successfully complete all mini-games on the Star difficulty setting to unlock Grand Prix mode.
Coin Derby mini-game
Successfully complete Challenge mode to unlock the Coin Derby mini-game.
Star Dash mini-game
Successfully complete all six mini-games on the Star difficulty setting to unlock the Star Dash mini-game.
Toy Stadium mini-game
Successfully complete all mini-games on any difficulty setting in Challenge mode, then purchase the Secret Map from the Item Shop for 500 coins. A Warp Pipe will now appear that will take you to the Toy Stadium mini-game.
Koopa Castle stadium
Successfully complete Challenge mode to unlock the Koopa Castle stadium.
Play as Baby Luigi
Successfully complete Challenge mode with Yoshi to unlock Baby Luigi.
Play as Bowser
Successfully complete Challenge mode on Special with any character to unlock Bowser.
Play as Dixie Kong
Successfully complete Challenge mode with Donkey Kong to unlock Dixie Kong.
Play as Hammer Bro
Successfully complete Challenge mode with Bowser to unlock Hammer Bro.
Play as Monty Mole
Successfully complete Challenge mode with Mario to unlock Monty Mole.
Play as Petey Piranha
Successfully complete Challenge mode with Wario to unlock Petey Piranha.
Play as Toadette
Successfully complete Challenge mode with Peach to unlock Toadette.
Super Star item
Complete the item check list to unlock the Super Star item.
Easy homeruns
Go to Exhibition mode and play with two players. Have player two as the pitching team, and player one as the batting team. Press A to pitch the ball. As soon as you press A, when player 2 is preparing to pitch, quickly go to player one and charge up for a charge swing. Then, hit the ball when your character is fully charged. Most of the time you will get a homerun. Note: Using characters such as Wario, Donkey Kong, Bowser, and other power type characters is recommended.
Nice pitch with Mario
While pitching with Mario, press A to make him start his wind-up. When he reaches the top of his jump, press A again to make his pitch a "nice". Note: This may require a few attempts.
