Users who own this game also own:

BioShock
BioShock
Call of Duty 2
Call of Duty 2
Crysis
Crysis
S.T.A.L.K.E.R.: Shadow of Chernobyl
S.T.A.L.K.E.R.: Shadow of Chernobyl
Spore Galactic Adventures
Spore Galactic Adventures