The product key for "Company of Heroes" PC game is a unique set of letters and numbers that comes with every copy of the game. It is required to install the game into a computer system and to unlock special game features.
This product key, or serial number, is commonly found at the back of the CD case or at the registration instructions. "Company of Heroes" is a real-time strategy World War II video game developed by Relic Entertainment. It was first released in September 2006 and is available for play on Windows operating systems and Mac OS X operating systems, according to the official "Company of Heroes" website.