Editing Inquisitor (role-playing game) (section)

== Source books ==
There are a few additional companion rulebooks for the Inquisitor game:

; Thorian Faction Sourcebook: This book details the background and history of the Thorian philosophy and those who follow it. Amongst other topics, the book focuses on the efforts of Promeus, a semi-legendary figure from the earliest days of the Imperium, and his desire to revive the Emperor of Mankind from his half-life existence on the Golden Throne. It traces his, and his followers the Promeans', attempts to achieve their end and conflict with their allies and later rivals led by Moriana. After thousands of years, the two factions slowly disappear, but their history and achievements have paved the way for two new factions, the Thorians and the Horusians, to rise and seek out a new way to approach the divine nature of the Emperor.The book details additional characters and how the followers of the Thorian philosophy interact with other Ordos of the Inquisition. It also provides additional weapons and powers to be used by the Thorians.