Only sporadically, much of it online.. I have found this book highly recommended and plan on kindle-ing it soon: http://www.amazon.com/Rules-Play-Game-Design-Fu

Only sporadically, much of it online.. I have found this book highly recommended and plan on kindle-ing it soon: http://www.amazon.com/Rules-Play-Game-Design-Fundamentals/dp/0262240459/ http://www.amazon.com/Rules-Play-Game-Design-Fundamentals/dp...