Operation: Annihilate! is a scenario for the Mac version of Wolfenstein 3D by Laz Rojas. It has 10 new levels, full of many tricks and traps.
For those of you who crave action, here it is! Lots of barricaded enemies, secret doors, and places where you can shoot past columns at enemies three rooms away -- and they can shoot at you. Beware of snipers!
Download Operation: Annihilate! at lazrojas.com