It' just the same old stuff, right?  A "new" doom level created
with a randomizer or some such thing?

Yes, it appears that way...  but it's not.

The story so far...
  You're a doom stud and blowing up your friends on level 1 
episode 1 is getting old.  You can do it in your sleep.  What
if there were almost twice the number of rooms.  What if there
were plenty of new sniping spots from which to smear your
former friends (& enimies) on the concrete. Here it is.  Good
luck & may the foreskin be with you.
                                     
                                                    Red Beard


just type "doom -file e1m1-hax.wad" & start pulling the trigger