Rivals for Catan Exp: Age of Enlightenment (revised)Age of Enlightenment includes three new theme sets: The Era of Explorers, The Era of Sages, and The Era of Prosperity. In all, Age of Enlightenment is a 125 Card Expansion for the two player card game, The Rivals for Catan. It picks up where the first expansion, Age of Darkness, left off. The Era of Explorers Set sail from Catan! Explore! Discover new lands! Your Explorer Harbor serves as a starting point for your exploration of 9 adjacent sea cards.