Steam users will be able to enjoy Rare's pirate game Sea of Thieves at some point.
Over on Steam, a page for Sea of Thieves has appeared, noting that the game is "coming soon" to the service.
Microsoft has said cross-play will allow Xbox One, Windows 10 and Steam users to play the game together when it launches on Steam.
Back in May last year, Microsoft said some of its Xbox Game Studios PC games would be coming to Steam, including Gears of War 5.
The company said at the time the intent was to make its Xbox Game Studios PC games available to a wider range of players.
At present, there are more than 20 Microsoft titles available on the service, including parts of Halo: The Master Chief Collection.