This page contains Super Mario Galaxy 2 Unlockables for Nintendo Wii called "Green Star Challenge" and has been posted or updated on May 27, 2010 by Zinko. Let us know what you think of this Unlockable by thumbs voting.
Green Star Challenge
Collect all 120 stars and beat bowser and you will get a new cutscene with Rosalina reading about the green star to her "children".
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