CD Key

[Capt Thunderbolt]

I've just installed and went to play as it's asking me for a CD Key. I've done the usual thing, right click the game in the Library and have a look around the links however, there is none to show the CD Key is there as there would be for say Company of Heroes. Any ideas?

[BoNT]

Uses your Crysis: Warhead (The Single-player one) CD key. Check that in your library and enter that in when it asks for a key.