Doom 3: Worlds on Fire - 4284

The year is 2144...and the battle over Earth's precious resources has raged for a century. With global economies in ruins and all-out world war more than a possibility, the U.S government turned to the Union Aerospace Corporation, giving it carte blanche on the legendary red planet of Mars in a desperate bid to construct an off-world outpost that might provide resources, a military advantage...as well as something so secret that even members of government don't have a clue about it.... Special Ops Marine Lieutenant John Kane was once a careerist simply glad to have a job, and couldn't care less about politics just as long as Uncle Sam's check cleared. But that was before he listened to his conscience and disobeyed a direct order. Busted down to private, Kane has been reassigned to the "U.S. Space Marines" -- the private army of the UAC -- with the prospect of becoming little more than a glorified security guard on Mars.... Now Lt. Kane's fate leads him to Mars City -- part environmen