Modern Warfare 3 (2011)

1. Download the Plutonium Launcher

2. Create an account on the Plutonium forums and log into it in the Launcher

warning

Make sure you activate your account via your e-mail.

3. Click on IW5 Multiplayer in the sidebar and click Setup

4. Select your game folder

How to open Steam game's folder?

Congrats!

If you've followed all of the steps correctly, you should be able to play Modern Warfare 3 (2011).

important

Do not launch the game from your Steam library. Launch it from the Plutonium Launcher.