: A product key, also known as a CD key, is a unique code that is used to activate and validate a game. For Company of Heroes: Opposing Fronts, the product key is required to install and play the game. It ensures that the game is genuine and has not been pirated.
: During the installation process, you will be prompted to enter your product key. Type in the product key exactly as it appears, ensuring there are no typos.
can be a bit confusing. Since the game transitioned to Steamworks years ago, the way you use these codes has changed.