Files like part1.rar , part2.rar , etc., are pieces of one large game.

Because that specific file is part of a multi-volume archive, you cannot use it by itself. Here is what you need to know to handle that file: 🧩 Understanding Split Archives (.rar)

If you are having trouble with the installation, let me know: The exact you are seeing (if any). If you are missing the password for the archive. If you need help finding the other parts of the download.