Official Rulebooks

Cepheus Deluxe Rules

This is an evolution of Cepheus Engine that improves the game in too many ways to list here. Cepheus Deluxe by Stellagama Publishing is available in PDF, softcover, and hardcover formats from DriveThruRPG.

https://www.drivethrurpg.com/product/370075/Cepheus-Deluxe

Terra Arisen Rules

This book has the game setting, including new careers and some custom rules. It replaces the older These Stars Are Ours! setting book.

https://www.drivethrurpg.com/product/400138/Terra-Arisen