Operation Multiverse is a project I have been wanting to do for a long time. The goal of this mod is to combine all of the characters, items, and weapons from some of the original first person shooters. In the end there will be a new episode that ties all the stories of Duke, Wolfenstein, Doom, Blood, and Shadow Warrior together. Until then though, the Duke Nukem episode has been setup for random mode.
Small pack of voxels I made for the initial release, but cut out.
Just extract the folder to your game directory and add "include wolf3d_voxelpack/voxels.def" to your duke3d.def file. Sorry for the slow progress, hopefully the doom update will be coming out soon!