You can download the Call of Duty launcher for free on the Microsoft Store, Battle.net, or Steam, which acts as the hub for all modern titles. Installation Requirements
While (2023) is a paid premium title, there are specific ways to access parts of it or the broader experience for free. You can download the core "Call of Duty" launcher and access free-to-play modes like Call of Duty: Warzone at no cost. Free-to-Play Options call-of-duty-modern-warfare-3-game-free-download
The massive Battle Royale mode is entirely free-to-play and shares the same engine and weaponry as Modern Warfare 3. You can download the Call of Duty launcher
Call of Duty® - Free download and play on Windows - Microsoft Store Free-to-Play Options The massive Battle Royale mode is
If you plan to download the game, ensure your system has enough space, as the file sizes are substantial:
Call of Duty® - Free download and play on Windows. Microsoft Store. Microsoft Store Call of Duty: Modern Warfare III Installation and Setup