A direct sequel to Modern Warfare 2 featuring "Open Combat" missions.
Call of Duty® - Free download and play on Windows - Microsoft Store
The massive Battle Royale mode is entirely free-to-play and shares the same engine and weaponry as Modern Warfare 3.
Call of Duty® - Free download and play on Windows. Microsoft Store. Microsoft Store Call of Duty: Modern Warfare III Installation and Setup
Includes 16 remastered maps from the original 2009 Modern Warfare 2, along with new seasonal maps.
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
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
Activision frequently hosts limited-time "Free Access" events where you can download and play Modern Warfare 3 Multiplayer and Zombies for free for several days. These usually happen mid-season.