SCS Software continuously updates American Truck Simulator (ATS). As of 2025, the game is on versions 1.48, 1.49, or higher. Version 1.39 is legacy content. Consequently, you will not find this version on Steam by default (Steam auto-updates to the latest version). To get the full 1.39 experience, you have specific options which we will cover in the safety and legality section below.
should only be downloaded through official digital platforms. Beware of third-party "full download" links, as these are often unofficial and may contain malware or outdated files. PJ's Games Official Platform American Truck Simulator on Steam Automatic Updates american truck simulator 139 download full
Since 1.39 has the older lighting engine, you can push graphics higher than on 1.40+. the game is on versions 1.48