The Roman Empire is on the brink of collapse in the 3rd century, surrounded by enemies and internal revolts. Diocletian has a radical idea: share power with three other emperors, forming the Tetrarchy. In Tetrarchia, you and up to three friends take on the roles of these leaders, working together to save Rome from ruin. The game is cooperative, with simple rules but full of strategic choices. Each turn, you spend Imperium Points to move troops, suppress revolts, or face barbarians, always hoping the dice don't bring bad news. With 81 difficulty levels and several included expansions, each game is a unique challenge. Can you keep the empire standing before the provinces rebel or Rome falls?