File: | Thewitchers-0.2-pc.rar ...

Right-click the file, select "Open with..." , and choose WinRAR or 7-Zip . Check the box that says "Always use this app to open .rar files".

If the file continues to open in a text editor (like Notepad), your file associations are incorrect.

To access the contents, you need to use an unarchiving program like WinRAR or WinZip .