One of the main reasons I love the game so much is for its visual design and reverence of all things metal, so the art book was always going to be a must buy. It doesn't disappoint either, there's plenty of insight into the creative process from the artists involved and it's interesting to see the evolution of characters and environments and the direct sources certain elements were taken from. There's plenty of information to supplement the art without ever taking over, and the presentation itself is great with good quality paper and a density to make it feel like as much love went into the book as the game. I shelled out some extra money for the signed, shiny slipcase edition and have no regrets. Highly recommended.