A Theory of Fun for Game Design
Raph Koster
Programming Game AI by Example
Mat Buckland
Mental Language: From Plato to William of Ockham
Claude Panaccio
The Search for Atlantis: A History of Plato's Ideal State
Kershaw, Stephen
A Discourse on Method: Rightly Conducting the Reason, and Seeking ...
Rene. Descartes