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.
Credits:
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.
Base:
My creative mind (And lots of inspiration from a wide variety of sources)