This page contains Mario Superstar Baseball Unlockables for Gamecube called "Super Star" and has been posted or updated on Jun 4, 2007 by belleke. Let us know what you think of this Unlockable by thumbs voting.
Collect all items on the item checklist. Press Start, select "Check Stars," then choose a character. Look at the stars. Once all of them are filled with stars, that player will become a superstar.
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