This book lies.
You will note the five star rating for a good reason. The book claims to be about "Board Game Design" when in reallity it is so much more. It's about all games, from board to card to RPG. It discusses the core reasons for design and the main structures behind them. This doesn't focus on individual mechanics, but rather on the more fundamental, structural things.
If you want to design any game, this is a godsend. As a roleplaying game designer, it blew me away. Grab your copy.
[5 of 5 Stars!]