: Use a tool like 7-Zip or WinRAR to extract the contents of the .rar file to a dedicated folder on your computer.
: If you are adding mods from this archive to an existing installation, find your game folder, typically located at: Steam\steamapps\common\SovietRepublic\media_soviet\ .
If this is a manual installation (such as for a non-Steam version or a specific mod pack), follow these steps to set it up: