Just added a review of Raph Koster’s A Theory of Fun For Game Design to the site, plus some related thoughts about flOw, Super Columbine Massacre, etc., which will no doubt all seem much less topical in a couple of months. Still, there it is.
(Edited to add: Koster’s blog contains a recent thread of discussion about games and art, including links to some other reviews that are a little less IF-centric.)
Emily Short's Interactive Storytelling 
One thought on “Theory of Fun For Game Design”