Stadion Organized Play consists of card tournaments using constructed and drafted decks that offer no cash prizes - but instead represent the conflict and manipulation of individual patricians you portray within Imperivm.

Winning, placing or fulfilling special conditions; depending on tournament type - can influence the major story arcs, determine the result of City-State elections - or help determine who wins a major battle or dispute. You can compete against players of other city-states, but also within your own city-state to gain and wield power in Mosaic-Play. You never have to choose between loyalty to your favorite city-state and the playability of certain types of decks to gain power in game.