a mod for G/ZDoom and Zandronum that works with Doom 2 that randomizes Catacomb 3D (all four games), Hover Tank, necronita's Demon Hunter and Robot Redemption.
this one works for Doom 2 / ZDoom/Zandronum. It will randomize the different catacomb monsters into doom placements. There is a few that now have projectiles that were usually melee, just to fit with Doom.