Sea of Thieves is a colourful first-person multiplayer pirate game full of sea battles and buried treasure. It is developed by Rare Ltd, available for Xbox One and Windows 10. Sea of Thieves on Steam Sea of Thieves may embrace the golden age of piracy, but we’ve borrowed a little steam power to bring the experience to a new horde of potential pirates. Available on Steam now, Sea of Thieves lets you sail into our shared world and crew up with existing players on all platforms. Prepare to become a Pirate Legend! Sea of Thieves offers the essential pirate experience, from sailing and fighting to exploring and looting – everything you need to live the pirate life and become a legend in your own right. With no set roles, you have complete freedom to approach the world, and other players, however you choose. Regular free updates come to Sea of Thieves each month, adding characters, content, mechanics and rewards. Follow the unfolding lore of the world and take on new challenges!