The only legitimate ways to play the game for free or at no extra cost are:
Check if it is currently available via Xbox Game Pass , as Microsoft (who now owns Activision) has begun adding Call of Duty titles to the service. To help you get into the game safely, let me know: What platform are you on (PC, Xbox, or PlayStation)? Do you have a Game Pass or PlayStation Plus subscription? Call of Duty: Modern Warfare 2 Free Download (I...
The standalone battle royale mode is completely free-to-play and uses the same engine and assets. The only legitimate ways to play the game
While many sites claim to offer a "Free Download" for Call of Duty: Modern Warfare II (2022), it is a premium paid title. Be very cautious with these links, as they are often used to spread or lead to phishing scams. The standalone battle royale mode is completely free-to-play
Activision occasionally hosts limited-time events where the Multiplayer portion is free for a few days.