I enjoyed the game, and this extension artbook experience and gives even want to dive back there and to play again immediately. Careful work that shows the steps and the development of the characters, the story of the construction of the sets in which they operate. Really, you feel the meticulous work carried out and monstrous detail.
The pages on infected are chilling (and show some amazing projects, removed the final game because it gave him an appearance too "alien", as these plants literally caught the survivors to keep them in a kind of cocoon).
A beautiful book for a great game, almost felt like a movie.