As of my latest update, American Truck Simulator version 1.39 is an older, stable release. You cannot download it directly from Steam (Steam always gives the latest version, 1.53 as of 2026). However, you can still obtain 1.39 if you need it for mod compatibility or preference.
Open your Steam Library and right-click on American Truck Simulator. Select Properties from the menu. Navigate to the Betas tab on the left. american truck simulator 1.39 download
Open your Steam Library and right-click on American Truck Simulator. Select Properties from the menu. Navigate to the Betas tab. As of my latest update, American Truck Simulator version 1
Steam will automatically begin downloading the files for version 1.39. Why Downgrade to 1.39? Players typically revert to 1.39 for two main reasons: 4-Way Flashers: A small but highly requested quality-of-life
In the "Beta Participation" dropdown, scroll through the list and select temporary_1_39 - 1.39 for incompatible mods