A Theory of Fun for Game Design
Raph Koster
Game Programming Gems 8
Adam Lake
Principia Mathematica Vol 2
Alfred North Whitehead & Bertrand Russel
Game Engine Black Book Doom (v1.1)
Fabien Sanglard
Crush It!: Why NOW Is the Time to Cash In on Your Passion
Gary Vaynerchuk
Game Engine Gems, Volume One
Eric Lengyel
Game Engine Gems (1)
Programming Game AI by Example
Mat Buckland