Fantastic book if you're into Gears of War, or shooting games in general. Hearing a thorough game developer perspective in such detail is refreshing and insightful. And it really does answer the question of "do they just add things because they think they're cool?" once and for all.
Really worth the listen, even though the narration often makes the writing sound worse than it really is. Bleszinski uses very informal language, which the narrator tries to read like it's artful at times (spoiler: it makes straight forward writing sound like bad writing).