If you've purchased a physical copy of Call of Duty 1, your CD key should be printed on the back of the game case or on a separate card included with the game. If you've lost your CD key, you may be able to recover it by: * Checking your email for a digital receipt if you purchased the game online. * Looking for a sticker or a card with the CD key on it. * Contacting the game's publisher or the platform you're using (e.g., Steam, Battle.net) for assistance.
Entering the key is painless. There is no always-online DRM checking in with Activision servers every five minutes. Itโs a one-time entry that feels refreshingly old-school. However, getting the game to run on Windows 10 or 11 often requires fan-made patches, which the CD key has nothing to do with. call of duty 1 cd key