A Theory of Fun for Game Design
Raph Koster
Game Coding Complete
McShaffry, Mike(Author)
Theurgy and the Soul: The Neoplatonism of Iamblichus
Gregory Shaw & John Milbank & Aaron Riches
Art of Memory: Selected Works
Frances Amelia Yates
Philosophy and Theurgy in Late Antiquity
Algis Uzdavinys & John F. Finamore