Psychophobia V2.22
11A Cobalt & Pit production, with content provided by the Risen3D, jDoom, and (G)ZDoom communities.
If you want to visit the website where the wad (in progress) can be found, here's the link:
http://cobalt-pit.de/uk_index.html
This is the second level of the second episode of this wad. Currently, there are only two episodes that are complete and gameplay friendly. As you can see right away, this wad contains 3D models. It also boasts new features, such as destructible objects, tweaked monster behavior, fire & toxic gas from barrels, a comprehensive monster fighting arena, and more to come. It's in progress so be aware of updates.
If you can't find the page to download the wad, hover over "Doom", and in the two options given, click on "Psychophobia." In the page that follows, underneath "Downloads", you have four choices of where to grab the wad. Download wherever you feel most comfortable.
Oh and this game comes with an EasyStart method. The only thing you need to do is to put the Doom2.wad file into the IWAD's directory. There are multiple types of EasyStart, but if you want to enjoy the features you can see here, you need to use the 3D mode.
That's it. Go and play.