Found this today when I was LOOKING for new srb2 wads. I tried it and it seems good. So I decided to upload it and show it off. I don't know who made this wad but I found this picture on photoshop. But it has Drowned Downtown acting as Dark City so I was thinking Fawfulfan or the guy who made XSRB2. Anyways it seems real good as it is a near final SRB2. Anyways credit to whoever.
http://www.4shared.com/file/VJ7o1lLZ/21mod.html