Shadow Mountain has game (pun totally intended). The new book in Brandon Mull's Candy Shop War series comes with more than just an incredible story and sweet cover art (if I do say so myself), inside you'll find a pretty awesome game. Here's a link to explain more: http://www.youtube.com/watch?v=QLtQmqv4RAo
Also, check out the worlds biggest marshmallow fight too! http://www.youtube.com/watch?v=x4YeTwcUHvE