Published in 2004 by Guardians of Order, The Authority: Role-Playing Game and Resource Book is a comprehensive tabletop role-playing core rulebook based on Warren Ellis’s acclaimed “widescreen” comic book series. Written by game designers including John Chambers, Matt Forbeck, Jesse Scoble, and John Snead, the book captures a high-stakes setting where immensely powerful heroes tackle catastrophic, world-threatening events without maintaining the status quo.

Mechanically, the game utilizes a high-powered adaptation of the Tri-Stat System. The foundation of the book is based on a previous superhero game the company developed titled Silver Age Sentinels. The rules incorporate twelve-sided dice alongside rules support for d20 conversions. Visually stylized in a graphic-novel-sized hardcover format, it heavily highlights the artwork of Bryan Hitch from the initial 12-issue The Authority run to immerse players in its blockbuster superhero atmosphere.