Microsoft has confirmed the four games Xbox Live Gold subscribers will be getting in September.
As is typically the case, Xbox One gets two games and Xbox 360 gets the other two. On Xbox One, the free games are Forza 5, and indie adventure game Oxenfree.
As for Xbox 360, players will get Battlefield 3, and Hydro Thunder Hurricane. Availability varies by platform, as you know.
Forza 5: Game of the Year Edition will be available September 1-30. Oxenfree goes live September 16, and remains available until October 15. Things are a little different on Xbox 360, with Hydro Thunder Hurricane available September 1-15, and Battlefield 3 taking over September 16-30.
Sony has not yet announced its September Plus games.