Here's the Sea of Thieves PS5 launch trailer. Sea of Thieves is an online action multiplayer pirate game developed by Rare. Players will explore an epic world filled with adventure and wonder around every corner. Seek lost treasures, engage in intense battles, slay sea monsters, and more alone or with friends. Sea of Thieves is available now for PlayStation 5 (PS5) alongside Xbox One, Xbox Series S|X, and PC.