Activision frequently runs limited-time "Free Access" events, often around new season launches. During these periods, you can download a trial version from the PlayStation Store , Xbox Store , or Battle.net that typically includes a selection of Multiplayer maps and the full Zombies mode.
There are a few ways you can occasionally play portions of the game without buying it: Call of Duty: Modern Warfare 3 Free Game Downlo...
If you plan to download the game during a free trial or via Game Pass, ensure your PC meets these minimum specs: Call of Duty® - Free download and play on Windows Call of Duty: Modern Warfare 3 Free Game Downlo...