Sea of Thieves is a 2018 action-adventure game developed by Rare and published by Microsoft Studios. The player assumes the role of a pirate who completes voyages from different trading companies. The multiplayer game sees players explore an open world via a pirate ship from a first-person perspective. Groups of players encounter each other regularly during their adventures, sometimes forming alliances, and sometimes going head-to-head.

Rare Limited is a British video game developer and a studio of Xbox Game Studios based in Twycross, Leicestershire. Rare's games span the platform, first-person shooter, action-adventure, fighting, and racing genres. Its most popular games include the Battletoads, Donkey Kong, and Banjo-Kazooie series, as well as games like GoldenEye 007 (1997), Perfect Dark (2000), Conker's Bad Fur Day (2001), Viva Piñata (2006), and Sea of Thieves (2018).