Eclipse Phase is a D100-based game of post-apocalyptic transhuman conspiracy and horror. Your characters are operatives of Firewall, an organisation tasked with tackling existential threats to humanity. What’s an existential threat? Well, when a nanotechnologist disappears in a Martian wilderness teeming with Barsoomian freedom fighters, you have to go and find him, and hope that none of his creations have already been released.