It depends on your platform:
On Windows:
The directory Warzone 2100 Project\Warzone 2100 <version> is located under the %APPDATA% folder.
Hence, the default path for the Warzone 2100 configuration data on Windows Vista+ would be: C:\Users\$USER$\AppData\Roaming\Warzone 2100 Project\Warzone 2100 <version>\
By default, the %APPDATA% folder is hidden. Entering: %APPDATA%\Warzone 2100 Project\ into the address bar of Windows Explorer / File Explorer will browse to your Warzone directory.
On macOS:
The directory Warzone 2100 <version> can be found in your home-directory at: ~/Library/Application Support/
By default, recent version of macOS hide your account’s Library folder. To view it in Finder, hold down the Option (⌥) key while clicking the Go menu, and your Library folder will appear as a menu choice.
On Linux:
Under GNU/Linux, Warzone 2100 conforms to the XDG base directory spec.
By default, the directory warzone2100-<version> can be found in your home-directory under the path ~/.local/share/. (If the XDG_DATA_HOME environment variable is defined, the Warzone folder will be located within $XDG_DATA_HOME.)
The leading dot in the .local part of the path indicates that it is a hidden directory, so depending on your configuration you may not be able to see it. However, you can still access it by typing the path into your address-bar.
