The official website for The Settlers of Catan

Now you can expand your principality in new directions! Each of the 6 expansion sets feature a different theme to enhance the flavor of your Catan Card Game™ experience.

The Card Game Expansion Set includes:

• Trade & Change
  This Theme features new avenues for trade and commerce, new uses for trade fleets, and new opportunities that can change fundamental strategies.

• Politics & Intrigue
  This Theme features the shady side of running a principality: Secret Societies, bribed Knights, and clever diplomats. Or you can align yourself with the Church in this Theme.

• Knights & Merchants
  This Theme features clever merchants and valiant Knights. You can take your struggle for dominance to the battlefield or outwit your opponent at the negotiating table.

• Science & Progress
  This Theme features scientific progress and learned invention. The University serves as a center of learning for your people, and that knowledge can propel you to greatness.

• Wizards & Dragons
  This Theme features powerful Wizards and mighty Dragons, magic spells to bedevil your foes, and mystical advantages to enhance your principality.

• Barbarians & Traders (beginning with the 2003 edition)
  This theme features dangerous barbarians and brilliant traders and explorers to help expand and defend your principality’s resouces and holdings.