This is a playable demo of it, with the first 2 zones (4 maps). I decided to release a demo because a lot of the features are experimental in nature, so I decided that getting feedback would be important, as it could help improve the megamod, and iron out any potential problems, particularly in the gameplay.
The makers of DooM, ZDoom, it's editors and all those levels. Espi (author of narcosis.wad) for the new grass/soil flats and a couple of tree sprites (narcosis.txt included as requested). Also to everyone on the Doomworld and ZDoom forums that helped me out when I asked questions on how to do various things.
My creative mind (And lots of inspiration from a wide variety of sources)