ACM - affordances
Dennis L. Kappen
Lennart E. Nacke
John Gregory
Daniel Stepchenko
Rina R. Wehbe
People, places, and play
Physiological indicators for the evaluation of co-located collaborative play
Putting Fun into Video Games for Older Adults
Meth-ods for Evaluating Gameplay Experience in a Serious Gaming Context, Journal of CS in Sport, pp
Giving good “face”
The many faces of sociability and social play in games