Production of the project has been going for a long time since sometime around 2007. I worked on it as an on/off project. I did the Doom 2 compile attempt about 5 year's ago.
To be clear the Doom 1 download is a level fusion with all Doom 1 episodes in one single level with no loading screens. The Doom 2 download is basically the same but with all doom 2 episodes. Each download is a continuous level/map. Read the download page for more info.
Posted by Ronnie42 on Nov 20th, 2013
(I'm aware of bugs on both builds, I'm looking into them, just remember this may take some time, most bugs ignore in co-op, less buggy in multiplayer but feel free to point out any bugs in the comments so I can look into it)
Currently I'm updating my news to say that I have once again been
busy, got the Doom 2 compiled, ready, thankfully not as buggy but more stable while the Doom 1
compile is still isn't bug free yet and I'm also currently
experimenting with fusing these insanely big maps but having trouble
with it so that might take a while.
Here's the link for the Doom 2 continuous Map: (including all Doom 2 episodes in one level/map)
Moddb.com DOWNLOAD HERE
Also feel free to check the full map image here if your curious about how big the Doom map has got:
Overall this project is still on-going so anything you see here may
eventually change, testing will occur over time. Also I'm only one
person so sometimes progress may not be as often or like this week it
may end up...............with a ton of updates.
So drop a comment, spread the work, feel free to point any problems
or if you have tips on how to fix some issues since I could do with as
much help as I can get. I'm aware the Doom 1 build has plenty of issues
so if anyone has any ideas on how to fix these problems then I'm open to
ideas on how to fix them.
Also I have made told that it works with some mods so feel free to try them.