Drop the extracted folder into the Mods directory.
If you are using this file, the standard manual installation process for RimWorld mods typically involves the following: rimworld-mp-steam-fix-for-v1-3-3117-zip
The file appears to be a community-distributed patch or "fix" designed to enable online play for RimWorld version 1.3.3117 , specifically for users experiencing connection issues or using non-Steam versions of the game . Overview of the Fix Drop the extracted folder into the Mods directory
You should find a folder named Multiplayer or similar inside. rimworld-mp-steam-fix-for-v1-3-3117-zip
This specific ZIP file is often associated with "online fixes" that allow players to use the —which normally integrates with the Steam Workshop and Steam API—without requiring a standard Steam license or to resolve specific version mismatches.