i just downloaded an X-men conversion ...
i think it's for doom ...

shadows of apocalypse or something like that?
I know there was an x-men one for quake

it might be at that ...

I never know .. i have a strange impulse to download these things because they are free .. and i never have the time to play them.

I always wanted t play it....apparently the storyline involved apocalypse cloning the X-men, and you were meant to be in the role of Bishop.
It looked good...