Sea of Thieves is a genre-defining video game that takes sea conflict and engagement to a new level and refines what many players are accustomed to about ship sailing and naval combat. Developed by Rare and published by Microsoft, Sea of Thieves was released in March 2018 for Microsoft Windows and Xbox system of consoles. The developers call it a shared open-world adventure game. Players take control of a randomly generated character who sails with a boat full of people on open seas. Since the world is shared, you also encounter other ships controlled by online players. Depending on their motives, the online players may become your allies or hostiles.