Files ending in .rar from unofficial sources can sometimes contain malware.
If the archive is corrupted or doesn't work, the most stable and safe version is available on Steam , which includes 4K support and unlocked framerates. Catherine-Classic.rar
Since it is a .rar file, you need a specific utility to "unzip" it. Use WinRAR or 7-Zip (free and open source). Files ending in
Right-click the file and select "Extract to Catherine-Classic/" . Avoid "Extract Here" to prevent cluttering your folder with hundreds of loose files. 2. Basic Setup & Requirements Catherine-Classic.rar