A standard 25-character product key (format: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX) is universal for all game versions.
To legally play , including specific legacy versions like 1.31 and 1.35 , a genuine product key is required for activation through Steam or the official developer website . The Evolution of ETS2: Versions 1.31 and 1.35 Euro Truck Simulator 2 Version 1.35 1.31 Product Key
: If you're upgrading from an older version (like 1.31) to 1.35, ensure your product key is compatible. Typically, a key for an older version should work for newer versions, but it's always best to check with the game's support. Typically, a key for an older version should
While keys from older versions (like 1.31 or 1.35) can work on newer versions, SCS Software recommends registering the product key on Steam for automatic updates. Legacy Offline Activation: Older versions use a file named activation.scb How to Activate Your ETS2 Product Key
These two versions represented significant milestones in the game's development:
A massive update that added the Sardinia island , expanded roads in Germany and France, and introduced trailer ownership for container and logging trailers. How to Activate Your ETS2 Product Key