I'm not so familiar with the books, but you don't need to be to enjoy this game. It's very well designed, with fantastic artwork. No two games are the same as the board changes each time, with each castle tile placed independently to form a different layout.
The gameplay is interesting and imaginative, and there are several levels to it, which keeps you entertained. I look forward to playing it more (already addicted), and recommend it to all board game fans!