A campaign with many varied scenarios awaits you. First, you head for new shores. You leave Catan, land on neighboring islands, and receive special victory points whenever you are the first to settle an island. Then your ships explore entirely uncharted regions and discover either sea or land. Soon, you will meet the mysterious forgotten tribe and court its favor. Meanwhile, the pirates are becoming more audacious. You defend yourself and conquer the pirates' nests. For the glory of Catan, you finally compete with your opponents to build the most imposing wonders of the world.
The Seafarers expansion contains new frame pieces, which can be used to assemble frames of variable size. In these frames, you lay out combinations of islands that are always different, using the hexes from the Catan base game and additional hexes from the expansion set - either as shown in the scenario diagrams or according to your own imagination.
15 ships of each color are included. Building a ship costs 1 lumber and 1 wool. When you build a new ship, place it adjacent to a coastal settlement or a ship you have already built. As you can see, the rules for placing ships are similar to the rules for placing roads on land.
There is, however, one important exception: you may change the position of the front ships of a shipping route! That way, you can respond more flexibly to your opponents' actions and possibly be the first to reach an unsettled, productive island.
Other new features are the gold fields, which help their neighbors obtain any type of resource, and the pirate, who causes unrest on the peaceful.