Green Man Gaming has the Doom 3 BFG Edition (PC) for $10.49 downloaded. Remastered for 3D displays, smoother framrates and includes a seven-level solo section called "The Lost Mission".
Green Man Gaming has the Doom 3 BFG Edition (PC) for $15 - 20% off with coupon code GMG25-G4VDR-0ZL4Q = $11.25 downloaded. Remastered for 3D displays, smoother framrates and includes a seven-level solo section called "The Lost Mission".