CD key actually opens up a fascinating conversation about digital ownership, game preservation, and the "abandonware" era of the 2010s. The Ghost in the Machine: The Value of a Key
This brings us to the core of the problem: If you have the physical discs but lost the paper sleeve with the CD key, or if you are buying a "used" copy online, how do you activate it?
Carefully type in your key exactly as it appears.
Since the game is no longer officially for sale, you generally have two options: Third-Party Key Sellers : Sites like AllKeyShop