Dark clouds gather over the once peaceful landscape. Wild barbarians, lured by Catan’s wealth and power, manoeuvre to attack. Their massive warships loom against the orange horizon.You must be strong Barbarians attack the weakest targets, and the victim of their onslaught will be the player who contributes the least to the defense of Catan. Don’t take any chances Field your knights In The Cities & Knights of Catan, you engage in the defence of Catan and compete to build the three great metropolises of Catan. Each of these magnificent centers are even more valuable than cities and are safe from the barbarians. You must invest in city improvements, which you acquire using commodities of trade: Coin, Paper, and Cloth.