We can't call this a mod, it's a whole new 200mb game based on the Build engine. Standalone, does not need Duke3D to play, it's probably the biggest and best of its kind.
Looks great! Seems I had it on list of mods to add but I haven't had time recently to add mods. Since it's standalone game, I'll add it to main game list. Thanks! Zombie Crisis is already on site.