Doom 1 and 2 are some of my favorite games of all time, the enemy's were imaginative the level design was amazing, I like the story for what little there was of one, and I liked the fact that the demons and monsters would kill each other, given the chance. Wolfenstein, for me anyway, could never seem to engage me as much as doom. Maybe it was because of the dull enemy's, or the bland levels, I did like killing mech hitler though. Quake never really drew me in. The new Wolfenstein looks badass though, I will probably buy it at some point.