Sea of Thieves is a pirate adventure game developed by Rare and released in 2018 for Xbox and Windows, where players sail, explore islands and hunt treasure together. Its main theme is closely tied to that sense of shared adventure on the open sea, and piano arrangements have become a popular way for fans to reinterpret it in a quieter style. Online, these versions are widely used as background music for gameplay videos, streams and fan edits, keeping the game's adventurous mood alive long after its launch.