: In this context, they are often used interchangeably. A Retail Code usually refers to the physical code found in the box, while a Product Key is the digital string used for software activation. How to Activate Full Features on Steam
Possibly. In 2013–2015, Sega allowed key conversion. Today, that portal is closed. Contact Steam Support with proof of purchase.
If you already own the game on Steam, right-click the game in your Library , select Manage , and then click CD Keys .
Occasionally printed on a white sticker behind the disc tray.