WH3 Mod Manager
This is a mod manager for the Steam version of Warhammer 3 (as well as WH2, Three Kingdoms, Attila), and allows you to skip the WH3 Launcher, while adding features like filtering and presets. Especially useful for modders.
You don’t need to subscribe to or enable this mod, it’s here on the workshop just for visibility.
You need to actually download it here:
DOWNLOAD LINK[github.com]
Unzip it after downloading it and run wh3mm.exe. Where you unzip it doesn’t matter, the app gets the WH3 location from the registry.
How the mod manager works:
This isn’t important for daily use of the manager, but it can help you troubleshoot MP issues or understand what the manager does or doesn’t do. Like the CA Launcher, we send a list of mods to WH3.exe to use. Both the CA Launcher and this manager use a file named used_mods.txt for this. For multiplayer you can compare used_mods.txt between players, they need to be completely the same. The manager doesn’t touch WH3 or change any of the game files.
- If you get incompatible versions warning in MP try disabling everything under For Modders in options.
- if your Play button doesn’t work you can try putting the app into the WH3 folder, thanks to KurtySuit for reporting and finding a workaround for this.
- If your presets don’t save try deleting everything inside %appdata%/wh3mm (paste that into explorer) or the actual wh3mm folder.
- Try running as administrator.
- Try deleting the app folder and unzipping again.
- If you get the "attempting to launch with the optional parameters" popup in steam try restarting steam, or having steam minimized when pressing play, or adding wh3mm.exe as a non-steam game in steam and running it from there.
- If you encounter an issue or error try pressing Ctrl+Shift+I, there is a chance there is some error data in red in the Console tab that would be useful to me. Logs are also written into the %appdata%wh3mmlogs (you can paste this into win+r) folder.
Presets are saved into config.json inside %appdata%/wh3mm.
About flagging mods as outdated:
The CA Launcher auto-flags all mods as outdated after every major patch. As a modder I loathe this since in WH2 most of my mods had never actually been affected at all by a patch. If I can create a better way to find and flag outdated mods I’ll add it, but I’m not going to do the same thing the CA Launcher does. Since v1.36.0 there is a smarter checker that looks inside mods to see if they have files/tables that could be outdated.
Source on Github[github.com]
Rate and favorite to help visibility:
Revisions:
Old revisions of this mod are available below. Click the link to download.

