Based on an incredibly popular 2D6 science fiction game developed in the late-1970s, through the 80s and 90s, Cepheus Engine uses Open Content sources to build a free access SF game of unparalleled utility and playability. This is due to the act that much of the material published over the past 35 years can still be used with Cepheus Engine. And new settings, vehicles, worlds and scenarios are being published in print and as PDFs every week. Cepheus Engine is the key to the door linking science fiction roleplaying adventures of the past with those of the future. 

The game was skilfully  created from Open Content material by Jason Kemp of Samardan Press. True to the Open Content mission, he has released the game for free. That is three decades of science fiction, perfected by a generation of roleplayers, available to you without charge. That is astounding. And simply because it is free, does not mean that it is 'worthless'. The rules within are honed and tested, crafted and complete.  
​Cepheus Engine System Reference Document is available as a free down-loadable PDF from DrivethruRPG. ​
The Cepheus Engine Core Rules (beautifully formatted and laid out) are available either as a perfect bound softcover or a downloadable PDF. 
​The Cepheus Engine Vehicle Design Guide is a paid product, available as a PDF download from DrivethruRPG.
The Cepheus Spacecraft Design Guide is a complete spaceship design system that complements and expands on the rules within Cepheus Engine. It contains hundreds of possibilities and design choices. Written by Michael Johnson. PDF is HERE. 

​If you would like to read more about Cepheus Engine before downloading a free copy, then have a look at one or two blog posts and online reviews: 

Stargazer's World
Halfway Station
Den of the Lizard King
Twilight of the GM
Freelance Traveller Magazine
Lurking Rhythmically
BroccoliFest
The Geek Flag
Delta Quadrant
The Zhodani Base
dices everywhere, des dés, du fun, des jeux (French)
How To Walk in the Universe (Chinese)
Directory Gold

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