Mine has five including HL.. anyways try the cd keys that came with your other games it mightve gotten mixed up or something. Otherwise e-mail HL or Sierra or whatever.
That's the half-life Platinum edition & that comes with multiple cd-keys with that as mensioned above. Have you tried the correct cd-key or another cd-key from the pack ?
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.