This page contains Grabbed By The Ghoulies Unlockables for Xbox called "Mini-game challenges" and has been posted or updated on Feb 6, 2009 by grant.a06. Let us know what you think of this Unlockable by thumbs voting.
For every five "Rare books" that you find, you will unlock a bonus mini-game challenge at the mini-game screen. There are 100 "Rare books" in the game, which unlock a total of twenty bonus mini-game challenges. There is one "Rare book" in every room of the mansion. Challenge #21 is unlocked by completing the previous twenty challenges with a "Gold" or "Platinum" rank.
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