Catan: Seafarers Expansion [Board Game, 3-4 Players]The Catan: Seafarers Expansion, 5th Edition from Catan Studios and Asmodee is a major expansion for The Settlers of Catan. Players can build shipping lanes, which are very similar to roads. Additionally, the game comes with many different water hex heavy variant setups. The American version (Mayfair) should only be used with the American base game, instead of the German one (Kosmos), because of matching components and for the same reason, the Kosmos