Concordia: Britannia Expansion features a double-sided expansion map for Concordia and Concordia: Venus.

The Britannia map offers players a more concentrated area of play with only 23 cities in ten provinces. The players start in London and Boulogne and expand the area of Britannia from the south.

The Germania map offer players more flexibility of area with 30 cities in twelve provinces. It also offers the players castles, different starting positions, and sea colonists. These options give players exciting new ways to play this great game.