If you think you have mastered Catan, this expansion is here to humble you in the best way possible. It features three linked scenarios where you have to defend the island from a massive invasion from the Old World, offering the most intense strategic challenge in the series so far. You play as commanders trying to repel the barbarians, adding a really deep narrative layer to the game.

Just make sure you have both the original base game and the Cities & Knights expansion, because you will need both to face this threat.