The tool is available via the following link:

The game files also contain American and Slovak localization files. But American files are completely the same as English, and the Slovak ones are not fully translated, so I did not include them in the list.

It's very easy! Just specify the path to your WormsMayhem.exe (if the application does not automatically detect it), select desired language from the list and click Modify.

If Make backup is checked, a folder named LanguageToolBackups will be created and the current WormsMayhem.exe will be saved inside.



The selected language will be setted.
If not, make sure that folder WormsXHD\Data\Language\PC\ contains the required localization .xom files.