Files with this naming convention ( .rar with a specific date and "update" tag) often originate from unofficial sources. Before running any executable, it is highly recommended to: Scan the file with VirusTotal.
Copy it to a safe location to avoid losing progress if the update fails. JCB.Pioneer.Mars.Update.09.07.2020.rar
: Move the extracted update files into the main game directory, choosing to "Replace" files when prompted. Files with this naming convention (
Verify the developer's official Steam Community Page for legitimate patch notes, as the developers (Atomicom) typically released official updates through Steam's built-in system. JCB.Pioneer.Mars.Update.09.07.2020.rar