: If you bought the game on Steam , a separate key is often unnecessary because the license is tied directly to your account. However, you can find it by right-clicking the game in your library and selecting Manage > CD keys . How to Activate
If you absolutely must own the original for collection purposes, buy a sealed physical DVD from a reputable eBay seller with photos of the actual case. Treat the activation key as a collector’s item, not a practical purchase. Euro Truck Simulator 1 Activation Key
: If you own a physical disc, the key is typically printed on the back of the manual or the inlay inside the case. : If you bought the game on Steam
: Sites like AllKeyShop or Eneba often list "Global Steam Keys" for a few dollars. Just ensure you are buying a Steam Key rather than a "Legacy" or "Retail" key, as older retail keys may not activate on modern platforms. How to Activate Your Key Depending on where you got your key, follow these steps: Treat the activation key as a collector’s item,