After year of the New Sea being the dominion of cutthroat pirates, and daring merchant adventurers, the empires of the old world have turned their gaze towards its waters.

Letters of Marque is the third Saga expansion for Dead Reckoning. It contains 2 distinct but interconnected sets of expansion content. The first is "Flags of the Old World", a non-saga based set of content that introduces 2 empire boards, new resources called "Prime Cargo", new ship upgrades and a new "Explorer" card for each player's deck. The second is a new Saga, which, like to prior Saga expansions, contains encounters, mysteries, cards and content all to be organically while playing the game.