: If you want to keep a separate instance of version 1.1 alongside a newer version (like 2.0), you can download the stand-alone zip version from the official website . This version is self-contained and won't interfere with your main Steam or local installation.
If you own the game on , you can often switch between versions using the Beta selector : Right-click Factorio in your Steam Library. Select Properties > Betas . Choose the desired version from the dropdown menu . Important Safety Warning download-factorio-v1-1-69-online
: For those running a server on Linux, a headless version is available for free download . Steam Beta Participation : If you want to keep a separate instance of version 1