Settlers Of Catan Explorers & Pirates 5 6 Player Exp

"Now up to 6 players can settle Catan and enjoy the missions with pirate lairs, fishing grounds, and indigenous villages! You will need The Settlers of Catan Base Game, the Explorers & Pirates expansion, and both the Base Game 5-6 player extension and this Explorers & Pirates 5-6 player extension, a total of four game boxes."