Rating: 
Summary: definitely worth the money
Review: Like the first volume, Game Programming Gems 2 features an exceptional collection of articles written by a knowledgeable group of authors, most of whom are well-known and respected in the area they write about. This series (the third volume is already underway, as are related books focusing on AI and design) isn't intended to be a complete guide to all aspects of game development, but rather, a resource you turn to when you need help with a specific problem. As such, the series truly shines, and this volume is a worthy follow up to the first.
The articles, or gems, included in the book cover intermediate to advanced topics in the areas of general programming, mathematics, artificial intelligence, geometry management, graphics display, and audio programming, each edited by an expert in the field. Most of the gems assume that you have a fundamental knowledge of the issues related to the topic, and get to the point quickly. As a result, on average the gems are shorter than the previous volume. Both of these things could be viewed as either positives or negatives, depending on your experience level. Regardless, almost all of the gems are well written and relevant.
Most game programming books these days come with CDs packed full of demos, source code, and other information supplementing the book. Unfortunately, the CD that comes with this book isn't one of those. It does have source code from most of the chapters, but there are very few demos and no extras (unless you count GLUT and the DX8 SDK, which I don't since you can easily get those elsewhere). However, I'd count the CD as only a minor disappointment, since the book itself is so good.
If you're serious about game development, I'd highly recommend adding Gems 2 to your library. You'll definitely find things in it that you can use.
Rating: 
Summary: Good resource.
Review: An excellent resource for the times when you encounter problems you diddnt know existed.
Rating:
Summary: Good reference and guide
Review: Game Programming Gems 2 is a collection of short articles detailing various aspects of computer game design. Personally, I found the first half of the book to be very helpful while the second half, on rendering and audio techniques, was too brief and lacked the depth to be of much use. However, the first half, covering general game programming technique and mathematics has proved very useful to me in my amateur game programming endavours. Pick up this book if you are looking to add to your reference collection however, due to the nature of the articles and due to the price, you might find yourself heading to the library to pick up this book. In the end, a solid addition to a programming library. Note:
I am an amateur game programmer, not a professional
In addition, many of the articles are not relevant only to games.
Rating:
Summary: Good reference and guide
Review: Game Programming Gems 2 is a collection of short articles detailing various aspects of computer game design. Personally, I found the first half of the book to be very helpful while the second half, on rendering and audio techniques, was too brief and lacked the depth to be of much use. However, the first half, covering general game programming technique and mathematics has proved very useful to me in my amateur game programming endavours. Pick up this book if you are looking to add to your reference collection however, due to the nature of the articles and due to the price, you might find yourself heading to the library to pick up this book. In the end, a solid addition to a programming library. Note:
I am an amateur game programmer, not a professional
In addition, many of the articles are not relevant only to games.
Rating:
Summary: Decent; significantly better than both Gems1 and Gems3
Review: I have already exterminated in my reviews here Gems1 and Gems3; now I gotta say something about this one: it is, believe it or not, much better than those two. Although not entirely devoid of pretentious sermonizing about "patterns" etc., this book offers a highest content-to-bs ratio of all three in the series; the articles are actually interesting, stimulating, and useful. When I say "useful" I mean applicable even outside the games development. There's some sound in the book, a lot of interesting math-related things, AI, a few curious assembly tricks ("stack winding"), good bibliographies (the only part that's good in all books of the series) -- all stimulating and suitable for borrowing in many design contexts. This is the only book in the Games Gems series that is suitable for purchase blindly off the net. One thing (ultimate nitpicking) that's still annoying about it is writing style, replete with failing diction and humourless -- for example, the authors thoroughly earnestly call their little essays "a gem", as "in this gem I'm going to cover this and that". Of course, a "gem" is not a technical term, it's a normal English word, and it either means a real gem, or a metaphor for something of extremely high value. And so it appears that the authors have an a-priori huge opinion about their work. Which, in addition to being inappropriate (judgement of this kind is better left to the reader), is not what they mean. They simply mean "this article". Speaka Englisha? Anyone? Editors? Hello-o. OK, having thus satisfied my deep-seated hatred of self-satisfied geekdom with their attendant lack of feel for words, I end my review on a positive note -- it's a decent book.
Rating:
Summary: Great book, just missing a few things...
Review: I like this book a lot, though it isn't quite as good as the previous edition (partly because the first one was great) This book didn't have any real networking tips, which in this day and age seems a bit odd. Hopefully there will be a gems 3 and that will include some net stuff. It also had a few odd typos. Some of the gems were *very* short (1 or 2 pages), when it seemed like a slightly more detailed discussion would be nice. Other than those small problems, I enjoyed the book. I would recommend it to any game programmers that want to pick up a few useful tips.
Rating:
Summary: just great!
Review: I'd like recomend this book to everyone, who is interested in game programming and esp. to those who has the fisrt book. It is full of gems for developers, everything is clearly written (expet a few chapters, maybe). you wiill definetly find what you need in this book! i want to thank authors for another great book! (can't i'm waiting for game programming gems 3;)
Rating:
Summary: For the beginner...
Review: If you are new to game programming, I don't recommend buying this book. You'll probably get frustrated. I also advise against running out and getting one of those black and green books (you know, the series 'edited' by LaMothe). You're A LOT better off with Schaum's outlines on probability, linear algebra, calculus, physics, etc. You can buy 5 of those books for the cost of one of the LaMothe books. After you have the basic math/science skills, game programming will become MUCH easier and this book will actually make sense to you.
Rating:
Summary: The best EVER
Review: The biggest source of knowledge in game development, condensed in more than 70 useful chapters and pratical examples. Don't miss to have in your personal library.
Rating:
Summary: ridiculously amazing book for the game developer
Review: This is an incredible book that covers topics ranging from text parsers to audio engines. It also comes with a cd so I can put the great text parser in my game without typing a line. How sweet is that?
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