Eclipse Phase is a cyberpunk roleplaying game with elements or horror, its a world where humanity has reached the point of transhumanism, what is in essence immortality is common place and mankind no longer exist as it once did. Spread throughout the solar system in cities, new born colonies and the like they have been pushed from Earth by man made AIs known as TITANs.
To describe it in the words of those who made the game "Eclipse Phase is a post-apocalyptic roleplaying game of transhuman conspiracy and horror. Humans are enhanced and improved, but humanity is battered and bitterly divided. Technology allows the reshaping of bodies and minds and liberates us from material needs, but also creates opportunities for oppression and puts the capability for mass destruction in the hands of everyone. Many threats lurk in the devastated habitats of the Fall, dangers both familiar and alien."
The players are one of those Trans-humans who survived the Fall, an event caused by the TITANs that led to the fall of Earth and Trans-humanity's flight to the space beyond their home world. You can be anything from an operative of the organization Firewall to a mercenary selling his skills for anyone who will take it to a simple civilian who has decided to go out and seek his fortune past the Pandora gates as a Gatecrasher or colonist. The game provides an immense number of options for character creation beside the basics stats and skills, each character gets to choose a morph which is basically a body for your mind to inhabit, they vary from what is like a normal human to upraised apes and far far more.
The game is entirely free (though you can support the creators by buying real copies of their rulebooks) and all of the rulebooks, expansions, etc. can be found here ->
http://robboyle.wordpress.com/eclipse-phase-pdfs/I'm not the best at describing things so I'll let you guys get the rest of your impression about the game from the pdfs themselves, all I can really say is that the game is quite amazing just from reading part of the core rulebook and the expansions. If anyone is interested I figured we could get a few people to DM games, I myself would love to run a few sessions over IRC for all people interested.