The date in the filename ( 29.12.2022 ) suggests this build likely includes the major Together We Rule expansion, which was released in late 2022.
Once you have all parts, simply right-click Part 1 and select "Extract Here." The program will automatically pull data from the subsequent parts (including your Part 4). HUMANKIND.v29.12.2022.part4.rar
Multi-part RAR archives (like .part1.rar , .part2.rar , etc.) require to be in the same folder for the extraction to work. If any part is missing, the software (like WinRAR or 7-Zip ) will report a "missing volume" error and fail to extract the game files. Important Notes on this Version The date in the filename ( 29
If you are seeing an error message while trying to open the file, If any part is missing, the software (like
Be cautious when downloading .rar files from unofficial sources, as they can contain malware. It is always safer to use official platforms like Steam or the Epic Games Store .