If you have a bigger group that wants to set sail, this extension is exactly what you need. It allows you to add up to two more friends to your game of Catan Seafarers, bringing the total player count up to six. It includes everything you need to expand the map and introduces exciting new scenarios so you aren't just crowded on a small board. Just keep in mind that this is an extension, so you will need both the original Catan base game and the Seafarers expansion to use it.