: To activate a non-Steam version, you must enter the Product Key when launching the game for the first time. This process creates an activation.scb file in your Documents folder which stores the encoded key and a unique checksum.

Older non-Steam versions require entering a "Legacy" key directly into the game: Offline activation - Euro Truck Simulator 2

Euro Truck Simulator 1 Activation Key: The Complete Guide The original , released by SCS Software on August 6, 2008, remains a classic for simulation fans. While its successor, Euro Truck Simulator 2 , has taken over the spotlight, many players still seek an activation key to experience the foundational roots of European trucking. How to Get a Legal Activation Key

Sites claiming, “Generate unlimited Euro Truck Simulator 1 activation keys!” are 100% fraudulent. These are survey scams. You will be asked to complete a human verification survey, download a shady app, or enter your credit card for “age verification.” You will never receive a valid key.

Sites like sometimes have leftover ETS 1 keys from old physical bundles. However:

: For those with a disc copy, the 25-digit product key is usually printed on the manual or inside the CD case.