: This specific naming convention is typical of cracked or pirated software. These versions do not receive official security updates and may contain malicious code hidden within the game files. Outdated Version

Expanded random events like accidents and construction. 📂 Handling the .zip File

Downloading and installing "American Truck Simulator V1.31.1s.zip" is a straightforward process. However, ensure you download the game from a trusted source and follow the installation prompts carefully. If you encounter any issues during installation or gameplay, you can visit the official SCS Software forums or support pages for assistance. Happy gaming!

American Truck Simulator (ATS) version 1.31.1s, originally released in May 2018, remains a significant milestone for fans of the series due to its introduction of major mechanical and environmental features. While the game has advanced to versions 1.58 and beyond as of 2026, many players still seek the 1.31.1s zip file to maintain compatibility with specific legacy mods or to revisit the game's state from that era. Key Features of Version 1.31.1s

This article serves as your complete resource. We will cover why this particular version is still sought after, where to safely download the .zip file, a step-by-step installation guide, troubleshooting tips, and how to enhance this version with mods.