Book excerpt: Featuring interviews with the creators of 39 popular video games--including Halo 3, Call of Duty: Modern Warfare, Medal of Honor and Metroid Prime--this book gives a behind-the-scenes look at the origins of some of the most iconic shooter games. Interviewees recount endless hours of painstaking development, the challenges of working with mega-publishers, the growth of the genre and the creative processes that produced some of the industry's biggest hits, cult classics and indie successes.