Updated - Codigo De Activacion Del Producto Para Farming Simulator 2013
If you have a legitimate copy but lost your code, you don't necessarily have to buy the game again. You can reach out to the official team. Provide them with a photo of your physical disk/case or a digital screenshot of your purchase invoice. They are usually able to verify your ownership and issue a replacement key for the 2013 edition.
Codes are typically tied to a single user account. If you bought a used physical copy, the previous owner may have already registered the key. Why You Should Avoid "Free" Online Keys If you have a legitimate copy but lost
Look closely at characters like 0 (zero) vs O (letter), or 1 (one) vs I (capital i). If you have a legitimate copy but lost