Skip to main content
We recommend using the CB Servers Launcher for the easiest installation experience.

​
Prerequisites

Plutonium requires an account to play Multiplayer. You can create one at forum.plutonium.pw/register.

​
Manual Installation

1

Download the game

Download Modern Warfare 3 for free from Steam.
2

Download the client

Download the appropriate client for your game mode:
3

Place in game folder

Place the downloaded exe in your Modern Warfare 3 game folder.
4

Launch the client

Open the client by double-clicking on the exe.
5

Wait for updates

All necessary files should download automatically.
Plutonium may require you to set the install path in the launcher settings if the game is not detected automatically.
6

Play

Select your game mode and have fun!

​
Need Game Files?

If you don’t own the games, you can download them using our torrent guide or directly through the CB Servers Launcher.

​
Need Help?

If you need more help or support, please join our Discord.

​
Credits

This client is based on work by Plutonium and AlterWare. CB Servers is not associated with or endorsed by the original creators.