Eclipse Phase uses a modified version of Fate Core with Concepts from Gumshoe. Changes have been made to the system to allow for a more uninterrupted flow of play, and a more investigative game.

1. The Penumbral Shadows campaign will be a gatecrashing firewall campaign that will contain horror and conspiracy concepts. It will mostly take place in the Epsilon Eridani system, and embrace the more fantastic facets of the transhuman setting.

2. In the Thus Spoke Zarathustra campaign, each of the characters has been helped by the uplifted neo-octopoids of the Hidden Concern cartel on the planetoid Ceres and are paying back their assistance by acting as their agents in the Main Asteroid Belt, crossroads of the Solar System

3. In both settings, the characters are competent- overly so- in their field. However, the characters must keep in mind that their primary opposition can equal and in rare cases exceed this competency, so they must still keep their wits about them.

For more information on the game, please see the wiki, specifically, the rules section. Also, please peruse the background of the game for more information on this setting the characters inhabit. The complete text of the rules are downloadable here.