These are an extra set of cards for the Catan: Cities & Knights expansion for Settlers of Catan. They are to replace the expansions game cards which come with this set. In effect they are an expansion to an expansion for Catan.
In Cities & Knights, the expansion introduces three new commodities paper, cloth, and coin. These new game elements allow you to improve your cities. This then gives you advantages and victory points.
The Cities & Knights expansion also replaces the development cards in the base game. These new development cards are related to one of the commodities. As you improve your cities, you have a chance to draw them each turn.
Like those in Settlers of Catan, the new development cards have a wide range of effects. But some are more balanced. Monopoly card, for example, only takes 2 of the named resource from any one player.
If you like Catan development cards and their effects, then this is the expansion for you. The extra cards are a great addition to a great expansion.
Game Components: 36 Commodity Cards 54 Progress Cards 6 Victory Point Cards
Please note a copy of the Catan base game and Cities & Knights required to play.