Chris Crawford, The art of computer game design
http://www.amazon.com/The-Art-Computer-Game-Design/dp/0881341177/ref=sr_1_1?ie=UTF8&qid=1347930963&sr=8-1&keywords=the+art+of+computer+game+design
Chris Crawford, The art of computer game design
http://www.amazon.com/The-Art-Computer-Game-Design/dp/0881341177/ref=sr_1_1?ie=UTF8&qid=1347930963&sr=8-1&keywords=the+art+of+computer+game+design