From the publisher blurb Contained within this book you will find all the information necessary to add a member of the Adeptus Astartes to an existing Inquisition style game presented in Dark Heresy or you can run an Astartes only campaign. Each chapter in the book covers information on how to create a Space Marine, Space Marine career advances, new talents and skills, Space Marine Chapter specific rules, new equipment, new vehicles, and an in depth look at how to role play a Space Marine as well as a look at the psychology of each chapter presented. This document is completely unofficial and in no way endorsed by Games Workshop limited or Fantasy Flight Games.