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TSAO: These Stars Are Ours!
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TSAO: These Stars Are Ours!

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These Stars Are Ours is a space-opera setting for the Cepheus Engine Core Rules and other 2D6 OGL SciFi games.  Set in 2260 AD - two years after the Terrans took Keid and forced the Reticulan Empire to capitulate the book it introduces the player characters to the immediate aftermath of the Terran victory in the Terran Liberation War against the mighty Reticulan Empire and its many thralls. For their part, the upstart Terrans, bolstered by their victory against their old masters, now move to become a power to be reckoned with in interstellar affairs. Against this background of espionage, maneuvering, and saber-rattling, and on the new interstellar frontiers, the player characters can forge a destiny of heroes or villains of the new United Terran Republic. The book provides all the astrography and background necessary to set a sci-fi campaign in the exciting times of the 23rd century.

It is two years after we won the War against our old Reticulan masters. We - the children of Mother Terra - are now free to forge our destiny and put our mark on the stars. These stars are ours! This is a time for bold men and women to step up and claim the universe. We need intrepid explorers to discover the riches of our far frontiers; enterprising merchants to open new trade routes with far-away alien stars; cunning spies and agents to protect us from any alien plot against our hard-won independence; and of course - daring soldiers and spacemen to protect our borders and push back those who would enslave us again.

We are not alone - brave Cicek warriors and even Reticulan and Ssesslessian defectors fought along our side against the Reticulan legions. Against this mighty alliance, stand our many enemies - both internal and external. Corrupt politicians and crime-lords plot to turn our glorious Republic into their own plaything at our expense. Ruthless pirates and raiders rob far-flung colonies, heedless of the opening they give to our greater enemy. In the shadows, House Thiragin - the Reticulan noble house which once ruled Terra with an iron fist - plots and plans for its ultimate revenge on us upstart “barbarians”. For all of this - children of the Earth – Mother Terra needs you!

This book contains:

  • History and background material for 23rd century Terra and the larger universe.
  • Corporations, political parties, and illegal groups – both Terran and alien.
  • 4 major alien species and several minor ones – all detailed.
  • Rules for generating and playing characters from 6 alien species.
  • 7 alien careers and 12 Terran ones.
  • Advanced character generation rules and event tables for all included careers.
  • Rules for cybernetic augmentation, body modification, and cyborg conversion.
  • 2 small craft and 5 starships with full game statistics and high-res deck plans.
  • The Terran Borderlands including 64 detailed worlds and a high-res star map.
  • 12 Patrons offering adventurous missions to the players' characters.


Note that this book provides character generations, biological and cultural background, and flying saucers (!) for playing Grey Aliens from Zeta 2 Reticuli – ready to drop into any Cepheus Engine campaign!

 Customers who bought this title also purchased
Reviews (2)
Discussions (5)
Customer avatar
March 03, 2018 3:53 am UTC
What's the updated space combat like? I'm looking for something that supports ship detection challenges and boarding parties and such. Also, how does FTL work? Sripl one week jump space or something different?
Customer avatar
Omer J March 03, 2018 7:31 am UTC
TSAO does not change space combat, but does supply new ships. Combat is as in the Cepheus Engine (published by Samardan Press). FTL indeed works at the rate of one week per jump in jump space, to a number of parsecs per jump equal to the Jump Drive's rating.
Customer avatar
Jack M April 30, 2017 3:27 pm UTC
Is this a stand-alone RPG or do I need a core book?
Customer avatar
Omer J April 30, 2017 4:38 pm UTC
It is a setting book. You need the Cepheus Engine rules from Samardan Press to play it. However, these rules are pay-what-you-want, so no problem here :-)
Customer avatar
Stephan F March 07, 2017 10:29 am UTC
Do you plan to publish a print version?
Customer avatar
Omer J March 08, 2017 2:55 pm UTC
Yes, definitely so! We are now at the final stages of the print layout. Afterward the book will undergo the print preparation process and hopefully this should be in print within a month or so.
Customer avatar
Omer J March 31, 2017 4:19 pm UTC
Update: we have ordered the final print proof - fingers crossed, the Print-on-Demand version should be available in a week or two.
Customer avatar
Tim L March 06, 2017 9:45 am UTC
I got a message from you guys saying that those who bought your other setting (The Space Patrol) were eligible for a 10% off on this pdf. However, there was no link provided in the mail, so I'm a bit confused on how I could take advantage of that offer. Is this 10% off already reflected in the price here, or do we have to do anything special to activate it?
Customer avatar
Omer J March 06, 2017 10:17 am UTC
This should have been sent! Thanks for notifying me. Re-sending.
Customer avatar
Tim L March 06, 2017 1:34 pm UTC
Just a small update to let you know I didn't get any new notification or mail. But no biggie, I just planned to buy early to take advantage of the 10% off. Even without that I'll still be buying your book based on the high quality of your other work, but then it'll be next month as part my monthly purchases instead of now.
Customer avatar
Omer J March 08, 2017 2:56 pm UTC
This is now being handled by DriveThruRPG tech support. Hopefully they will be able to resolve this soon.
Customer avatar
Omer J March 09, 2017 7:39 am UTC
Please check your mail, I have sent you a new discount code which should work this time. Please contact us here in case of any further problem. Alternatively, you can contact me directly at golan2072 -at- gmail -dot- com
Customer avatar
Tim L March 09, 2017 7:47 am UTC
Yep! Got the mail with a working discount link, so in other words: sold! ;)
Customer avatar
James S March 06, 2017 6:04 am UTC
Very nice, any plan to do more books?
Customer avatar
Omer J March 06, 2017 6:07 am UTC

Indeed, we are already hard at work on more products in this line, both sourcebooks and adventures - and other surprises.
Customer avatar
James S March 06, 2017 12:58 pm UTC
Great looking forward to them
Customer avatar
Omer J March 07, 2017 10:41 am UTC
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File Last Updated:
July 11, 2017
This title was added to our catalog on March 05, 2017.