"The major difference between Doom 3 and the original is the pace. While the 1994 title was a fast paced shooting game with only a few dark places in the levels, Doom 3 moves along at a much slower pace for much of the time. This is due to having Doom 3¿s Mars location (and another one we won¿t reveal) be placed in almost total darkness. Your flashlight, used only occasionally in other first person shooter titles, is used almost all the time here, and the team at id Software has used that darkness to make the environments you have to go though as scary as they can make them. We were skeptical that Doom 3 would be able to make us jump out of our chair in fright but they did it."