DIGAREC Keynote Lectures 2009 10 The sixth volume of the DIGAREC Series holds the contributions to the DIGAREC Keynote Lectures given at the University of Potsdam in the winter semester 2009 10. With contributions by Mark J.P. Wolf (Concordia University Wisconsin) Espen Aarseth (Center for Computer Games Research IT University of Copenhagen) Katie Salen (Parsons New School of Design New York) Laura Ermi and Frans Mäyrä (University of Tampere) and Lev Manovich (University of Southern California San Diego).