Simply log in to the official Steam Client, find Euro Truck Simulator in your game library, and download it directly.
You can attempt to take that legacy retail key and permanently bind it to a modern launcher by clicking + Add a Game -> Activate a Product on Steam in the client's bottom-left corner. Actiivation key lost - SCS Software euro truck simulator 1 activation code and email patched
: Authentication is handled entirely through your Steam account login. 2. Modern Digital Storefronts Simply log in to the official Steam Client,
Here are the official stores where you can purchase a legitimate copy: active mod support
Euro Truck Simulator 2 is frequently on sale for very low prices (often under $5) and includes vastly more content, active mod support, and multiplayer. The original ETS1 is largely obsolete.