Eclipse Phase is a science fiction horror  role-playing game with transhumanist themes.  Futurist Anders Sandberg noted its differences from GURPS Transhuman Spaceincluded its emphasis on posthuman (rather than transhuman ) characters and cosmic horror.  Originally published by Catalyst Game Labs ,  Eclipse Phase is now published by the game’s creators, Posthuman Studios , and is released under a Creative Commons license.    In 2010, it won the 36th Annual Origins award for Best Roleplaying Game.  It also won three 2010 ENnie awards : Gold for Best Writing, Silver for Best Cover Art, and Silver for Product of the Year. 
Eclipse Phase is a post-apocalyptic game of conspiracy and horror.  It takes up after-a World War III project to create artificial intelligence has gone rogue under the impact of an extraterrestrial entity Known as the “Exsurgent” (best Described as an organic computer virus with the capacity to infect Both machinery and animals with sapient qualities), resulting in the deaths of over 90% of the inhabitants of Earth.
Earth is now abandoned, and existing colonies throughout the Solar System are being expanded to accommodate refugees. The setting explores a spectrum of socioeconomic systems in each of these colonies:
- A capitalist / republican system continues in the Inner System (Mars, the Moon, and Mercury), under the Planetary Consortium, a corporate body which permits the election of representatives and whose shareholders are nominally most powerful.
- An Extropian / Propertarian system is established in the Asteroid Belt . The Extropians are split into two subfactions, an anarcho-capitalist group, more closely related to the Hypercapitalists and a mutualist group, related closely to the Anarchists.
- A military oligarchy rules the moons around Jupiter.
- An alliance of Scandinavia-style social democracy and Collectivist anarchism are dominant in the Outer System.
From there, the setting explores various scientific advances, extrapolated far into the future. Nanotechnology , terraforming , Zero-G living , animal upgrading sapience , and reputation systems are all used as plot points and background.
Aliens, weapons of mass destruction, Exsurgent Viruses, and political unrest.
Eclipse Phase uses a simple roll-under percentile die system for task resolution.  Players roll the percentile dice (by rolling two ten-sided dice with one of the dice representing a 10 value), and compares that roll to a target number with the goal being matched to the number with the roll. In addition, any roll of a double (11, 22, 33 etc.) is a critical. If it is a critical success, it is a critical success. Physical damage caused by injury or mental stress caused by traumaticevents), players rolled a number of ten-sided dice and add the values together, along with any modifiers. 
- Eclipse Phase (Core Rulebook) (2009)
- Sunward (2010)
- Gatecrashing (2010)
- Panopticon (2011)
- Rimward (2012)
- Transhuman (2013)
- Firewall (2015)
- X-Risks (2016)
Creative Commons License
The Eclipse Phase roleplaying game is released under a Creative Commons license; the text found on the Eclipse Phase website is licensed under the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License.  As stated on their website, the publishers encourage players and gamemasters to recreate, alter, and “remix” the material for non-commercial purposes. Further, copying and sharing the game’s electronic versions is legal.
- Jump up^ Randol Hooper, Jaime Pittenger and William Stull (2009-08-09). “Gencon 2008 – Defining the Future: Eclipse Phase Part I” . BlueAlien.org . Retrieved 2009-09-01 .
- Jump up^ Huling, Ray (26 August 2009). “Eclipse Phase – Posthuman Studios Has a Game for You” . h + magazine . Retrieved 2009-08-31 .
- Jump up^ Sandberg, Anders (2009-08-30). “Eclipse Phase Review” . Retrieved 2009-09-01 .
- Jump up^ “Posthuman Studios Officially Takes Full Control of Eclipse Phase Production” . Catalyst Game Labs . Retrieved 4 July 2010 .
- Jump up^ Ken, White (2009-09-01). “Hoosier Daddy” GenCon 2009 Indianapolis Con Report ” . Indie Press Revolution . Retrieved 2009-09-01 .
- ^ Jump up to:a b Posthuman Studios. “Creative Commons License | Eclipse Phase” . Retrieved 2009-09-01 .
- Jump up^ Stidham, Neal (2009-08-25). “PDF, Hard Copy Preorder for Eclipse Phase – and Creative Commons License” . Game Journal . Retrieved 2010-10-01.
- Jump up^ Doctorow, Cory (2009-08-12). “http://boingboing.net/2009/08/12/eclipse-phase-cc-lic.html” . BoingBoing . Retrieved 2009-09-03 . External link in(help )
- Jump up^ “2010 Origins Awards Winners” . Origins . Retrieved 4 July 2010 .
- Jump up^ “2010 ENnie Winners” . ENnie Awards. 2010-08-12 . Retrieved 2010-08-12 .
- Jump up^ Posthuman Studios. “The Game | Eclipse Phase” . Retrieved 2009-09-09 .
- Jump up^ Eclipse Core Rulebook Phase , Posthuman Studios , p. 114, ISBN 978-0-9845835-0-8
- Jump up^ Eclipse Core Rulebook Phase , Posthuman Studios , p. 192, ISBN 978-0-9845835-0-8