For your information: there is an interesting collection of papers available online, putting together the keynote presentations of DIGAREC lecture series that took place 2009-2010 in Potsdam. Germany. The immersion paper by Laura Ermi and myself, titled “Fundamental Components of the Gameplay Experience” is published there (with a new foreword), and there are interesting chapters by Espen Aarseth, Lev Manovich, Katie Salen, and Mark J.P. Wolf. The direct link to downloadable PDF:
http://opus.kobv.de/ubp/volltexte/2011/4978/pdf/digarec06.pdf