Sea of Thieves is a 2018 action-adventure game developed by Rare and published by Xbox Game Studios. The player assumes the role of a pirate who completes voyages from different trading companies in order to become the ultimate pirate legend. Sea of Thieves is a first-person multiplayer video game in which players cooperate with each other to explore an open world via a pirate ship. The game is described as a "shared world adventure game", which means groups of players will encounter each other regularly during their adventures, sometimes forming alliances, sometimes going head-to-head.