Today, I got hold of The Video Game Theory Reader by Wolf and Perron. Havn't read much yet though. But I'm glad to see that Gonzalo Frasca don´t think of ludology as just an anti-narratologist approach. It is indeed a field of study in its own right.

By the way, my new book came out. It's in Danish (I'm afraid) and based on my Ph. D. thesis.
Please look into Edutainment - leg og laer med computermediet.

The artist behind the front cover is Martin Bigum.