The year is 2299, and a desperate humanity wages war against the manifested legions of Hell itself. In the final battle, the last vestiges of mankind construct a vast fortified city to hold the daemonic hordes at bay.
Within this city, massive corporations vie for power, Daemonic kults carve a bloody swath through its citizenry, and technology has finally surpassed the limits of the flesh.
Take care when choosing your allies -- and even more when choosing your enemies.
This is the Obsidian.
Obsidian uses a custom d6 system, where one rolls a number of dice (based on stats), trying to achieve a target number for success.