Tracy Fullerton is author of the Game Design Workshop: A Playcentric Approach to Designing Innovative Games. This book is one of best attempts to encapsulate the diverse concerns, considerations, attitudes, historical and contextual awareness, and most of all a distillation from the wealth of experience earned by many many game designers. The list of game design greats interviewed and who share their thoughts and learning is evident in over 34 interviews with or reflective perspectives offered by designers.
Tracy's home site is a great branching-off point for learning more and discovering the latest developments: http://www.tracyfullerton.com/main/bio/
