Nine Worlds is a story-driven game with a unique system. It uses playing cards and a mechanic called Muses that helps groups create dramatic stories during play. The setting is a modern day fantasy where the gods and creatures of Greek myth are locked in a cold war among an astrological universe. Earth is at the center, cloaked in the illusion of modernity, but all around it are other worlds ruled by the gods and titans in a covert and sometimes overt battle or control of reality.
Players take on the role of Archons, the human agents of the Demiurge who shape the universe according to their whim and will. Archons are mortal humans who possess incredible power, potential, and awareness. The game master guides these Archon players through the game and takes on the roles of the supporting characters in the story. The Archons' great potential is both their blessing and their curse. Inevitably, their actions catch the attention of the immortals.