How can I get my CD KEY to be added to Steam%3F

Modern Warfare Remastered Support Forum


Hi all,


I have purchased COD4 Modern Warfare YEARS ago. While I have played it in the past, I have now installed on a new PC and I'd like to add it to my Steam since it is a game found in Steam as well.The CD KEY from this retail case, doesn't seem to work in Steam or Origin. 


Is there a way I can add this to my Steam Library? And I don't mean via "non-steam game"... I would like Steam to know that I have a ligit copy and it must be part of my account.

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Registered: ‎30-12-2018