[H] Civ 5, Civ 5 Gods and Kings, tf2 keys [W] S.T.A.L.K.E.R., Metro, any games

I have Civ 5 and Gods and Kings DLC and some tf2 keys. I want any decent games I don't have, specifically STALKER or Metro games, but I'm open to offers. I have most of the humble and indie bundles already, so don't offer those please.