The game was first conceptualized in 2014. Players need to become at least level 50 with 3 of the trading companies to become a Pirate Legend. The player assumes the role of a pirate who completes voyages from different trading companies in order to become the ultimate pirate legend.
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. In the game, players cooperate with others to explore an open world via a pirate ship. Sea of Thieves is a first-person action-adventure game developed by Rare and published by Microsoft Studios.