Eclipse Phase

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Tabletop science fiction role-playing game

title: "Eclipse Phase" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["creative-commons-licensed-books", "creative-commons-licensed-games", "ennies-winners", "games-about-extraterrestrial-life", "fiction-about-malware", "origins-award-winners", "post-apocalyptic-role-playing-games", "role-playing-games-introduced-in-2009", "science-fiction-horror", "science-fiction-role-playing-games", "fiction-about-computing", "dystopian-fiction", "fiction-about-consciousness-transfer", "fiction-about-the-solar-system", "fiction-about-transhumanism", "fiction-about-brain–computer-interface", "fiction-about-genetic-engineering", "fiction-about-biorobotics", "fiction-about-artificial-intelligence", "fiction-about-wormholes", "fiction-about-cyborgs"] description: "Tabletop science fiction role-playing game" topic_path: "technology/web" source: "https://en.wikipedia.org/wiki/Eclipse_Phase" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Tabletop science fiction role-playing game ::

::data[format=table title="Infobox RPG"]

Field	Value
title	Eclipse Phase
subtitle	The Roleplaying Game of Transhuman Conspiracy and Horror
publisher
date
image	Posthuman_Studios_Eclipse_Phase_2nd_ed_Roleplaying_game_cover_2019.jpg
caption	2nd Edition cover 2019
designer	Rob Boyle
system	d100/percentile
genre	Science fiction
web
isbn	978-0984583508
::

::callout[type=note] the roleplaying game ::

|title = Eclipse Phase |subtitle=The Roleplaying Game of Transhuman Conspiracy and Horror |publisher = |date= |image=Posthuman_Studios_Eclipse_Phase_2nd_ed_Roleplaying_game_cover_2019.jpg |caption=2nd Edition cover 2019 |designer=Rob Boyle |system = d100/percentile |players= |genre = Science fiction |web = |isbn=978-0984583508 Eclipse Phase is a science fiction horror role-playing game with transhumanist themes. It was originally published by Catalyst Game Labs, and is now published by the game's creators, Posthuman Studios, and is released under a Creative Commons license.

Setting

Eclipse Phase is a science fiction horror role-playing game with transhumanist, post-apocalyptic, and conspiracy themes.

The game is set after a World War III project to create artificial intelligence known as TITANs has gone rogue, resulting in the deaths of over 90% of the inhabitants of Earth. Earth is subsequently abandoned, and existing colonies throughout the Solar System are expanded to accommodate the refugees. The setting explores a spectrum of socioeconomic systems in each of these colonies:

A capitalist / republican system exists in the Inner System (Mars, the Moon, and Mercury), under the Planetary Consortium, a corporate body which allows the election of representatives but 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, upgrading animal sapience, and reputation systems are all used as plot points and background.

With all of this, the game encourages players to confront existential threats like aliens, weapons of mass destruction, Exsurgent Virus outbreaks, and political unrest.

Mechanics

Eclipse Phase uses a simple roll-under percentile die system for task resolution. Unlike most percentile systems, a roll of 00 does not count as a 100. In addition, any roll of a double (11, 22, 33 etc.) is a critical. If the double is under the target number it is a critical success, while being over the target number constitutes a critical failure.

For damage resolution (whether physical damage caused by injury or mental stress caused by traumatic events), players roll a designated number of ten-sided dice and add the values together, along with any modifiers.

Books

::figure[src="https://upload.wikimedia.org/wikipedia/commons/1/11/Eclipse_Phase_logo.png" caption="Eclipse Phase logo"] ::

Publications

Eclipse Phase (Core Rulebook) (2009)
GM Screen (2010)
Sunward,
Gatecrashing
Panopticon Volume 1: Habitats, Surveillance, Uplifts (2011) (2011)
Rimward (2012)
Transhuman: The Eclipse Phase Player’s Guide (2013)
Firewall (2015)
X-Risks (2016)
Eclipse Phase (Core Rulebook, Second Edition) (2019)

Nano Ops

Nano Op: Grinder
Nano Op: All That Glitters
Nano Op: Better on the Inside
Nano Op: Binge
Nano Op: Body Count

Creative Commons License

The Eclipse Phase roleplaying game was released under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 license, and newer printings have updated to the Creative Commons Attribution-Noncommercial-Share Alike 4.0 license; the text found on the Eclipse Phase website is licensed under the Creative Commons Attribution-Noncommercial-Share Alike 4.0 License. As stated on their website, the publishers encourage players and gamemasters to recreate, alter, and "remix" the material for non-commercial purposes as long as Posthuman Studios is attributed, and any derivatives are licensed under the same Creative Commons Attribution-Noncommercial-Share Alike 4.0 License. Further, copying and sharing the game's electronic versions non-commercially is legal.

Reception

In 2010, it won the 36th Annual Origins award for Best Roleplaying Game of 2009. It also won three 2010 ENnie awards: Gold for Best Writing, Silver for Best Cover Art, and Silver for Product of the Year.

References

Randol Hooper, Jaime Pittenger and William Stull. (2009-08-09). "Gencon 2008 - Defining the Future: Eclipse Phase Part I". BlueAlien.org.
Huling, Ray. (26 August 2009). "Eclipse Phase - Posthuman Studios Has a Game for You". [[h+ magazine]].
(June 2012). "Eclipse Phase Review and Character". RPG Review.
(2014). "Designers & Dragons. '00-'09 : A history of the roleplaying game industry". Evil Hat Productions.
(11 June 2010). "Eclipse Phase Core Rulebook". [[Posthuman Studios]].
"Eclipse Phase Nano Op: Grinder - Posthuman Studios LLC | Eclipse Phase Adventures | Eclipse Phase Second Edition | Nano Ops & Nano Drops | DriveThruRPG.com".
"Eclipse Phase Nano Op: All That Glitters - Posthuman Studios LLC | Eclipse Phase Adventures | Eclipse Phase Second Edition | Nano Ops & Nano Drops | DriveThruRPG.com".
"Eclipse Phase Nano Op: Better on the Inside - Posthuman Studios LLC | Eclipse Phase Adventures | Eclipse Phase Second Edition | Nano Ops & Nano Drops | DriveThruRPG.com".
"Eclipse Phase Nano Op: Binge - Posthuman Studios LLC | Eclipse Phase Adventures | Eclipse Phase Gamemaster Resources | Eclipse Phase Second Edition | Nano Ops & Nano Drops | DriveThruRPG.com".
"Eclipse Phase Nano Op: Body Count - Posthuman Studios LLC | Eclipse Phase Adventures | Eclipse Phase Second Edition | Nano Ops & Nano Drops | DriveThruRPG.com".
Ken, White. (2009-09-01). "Hoosier Daddy? GenCon 2009 Indianapolis Con Report". Indie Press Revolution.
Stidham, Neal. (February 2023). "PDF, Hard Copy Preorder for Eclipse Phase – and Creative Commons License". Game Journal.
Doctorow, Cory. (2009-08-12). "Eclipse Phase: CC-licensed tabletop singularity RPG". BoingBoing.
(2010-08-12). "2010 ENnie Winners". ENnie Awards.

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::