Beautiful, haunting, and mesmerizing. That's how I'd describe the world and story this game built. The official art book showcases the concept art made for the game's various characters, locations, and creatures and the goals they had when designing the world's styles and cultures. It's all stunning frankly (and that's coming from someone who hasn't actually played the game!) Its absolutely worth your time and money.

Also, special sidenote: the book is entirely spoiler free!!! So if you want to read this ahead of playing the game, you can do so without ruining the main plot! :D