Designing Virtual Worlds
Richard A. Bartle
Players and Their Pets
Consalvo, Mia; Begy, Jason;
History of Digital Games: Developments in Art, Design and Interaction
Andrew Williams
Feng Kuang De Pu Xi ( etc.) (Z-Library)
Wei Zhi
The Paradox of Transgression in Games
Kristine Jørgensen & Torill Elvira Mortensen