It is a sequel to 2024's Modern Warfare II, serving as the third entry in the rebooted Modern Warfare sub-series and the twentieth installment in the overall Call of Duty series. The game was released on November 10, 2024, for PlayStation 4, PlayStation 5, Windows, Xbox One, and Xbox Series X/S.
As to installing and downloading Call of Duty MW3 on Xbox, head to the "My games & apps" section and choose the "See all" option.Then, choose "Full library" and select "All owned games." Search and select the game and press the "Install all" button.