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Mar 29, 2016
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ReactionGaming is not affiliated in any way with the Plutonium mod development. We are a non-profit community that loves to mod our video games for fun and research. Our ad revenue goes out to supporting the forum hosting. We are not responsible for any future RCE/exploits to the game engine and the mod has that has not yet been patched that will ruined game experience or your personal computer. Remember to backup your computer files like you should have on the first place and If you like the game. buy the game. Do not worry! So far no any RCE's have not yet sabotage this client so you should be SAFE but we will let you know if it does happen on the forums and the our discord channel but most likely plutonium developers will know first thing and patch them quickly. before we even know it and will update your client automatically each time you run the plutonium launcher. Happy Gaming!

Please ensure you have the actual IW5 game, Steam will provide this to you for free, Steam will provide this to you for free, check this thread for instructions on how to get it.

Download The Plutonium Launcher

If your web browser blocks the download or removes it then you will need to tell your web browser to ignore the detection and keep the file. If Windows Defender blocks or removes the file then please download the file linked below and run the .bat file as Administrator. This will add the needed exclusions

Open REDACTEDFILENAME (you shouldn't need to run as administrator) and you should see it start to check for Launcher updates and download any that are required as shown below.


After this you will be shown a login screen, enter your Plutonium Forum Credentials and login. You will need to login every 2 weeks.
Don't have a account? Register Here


Ensure you are on the MW3 tab (it should look like the below image) and then click the Setup button. You now need to tell the Launcher where your copy of MW3 is stored, if you followed the guide in step 1, this location will be C:\Program Files (x86)\Steam\steamapps\common\Call Of Duty Modern Warfare 3
Once you've selected your game location it should change to a green Play button.


Good luck and have fun playing!

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