I have gone through 1/4 of the book and I say it is pretty good.
The beginning of the book focuses on project management, at least hints on how to design a game, what works and what not works and how to make sure your game will be great (or not). Think of it as common sense checking when making a game people will hopefully enjoy. Most of the articles re-iterate why other games have been successful (since if you are starting out making games then you may know about such games) and explains the details. This area is the most important. However, one of the articles for me just carried on and on about half way through and seemed like it wouldn't end but it did have good points in it.
The second part goes into content creation on how to create graphics, sounds, music, etc. I have flipped ahead and it appears promising. From what I saw, it seems well enough.
Be warned however, since this is a collection of articles, topics will jump and will not have continuity but generally they are placed together in a well manner. I expected this when I bought it and encouraged it since usually things become stale when written by a single person.
