as an old guy that is also a first person shooter gamer, I can identify with all the gaming references in this book. I loved the half life references. I liked his writing style also. I hate it when an author shows that the hero is about to be betrayed or something else bad is about to happen and let’s you worry about it through most of the book. he doesn’t do that here. he is my new favorite author. I’m crushed that audible doesn’t have anything else by him.