Here is your standard E2M1ish looking level replacement with a tinge that it's not about the details of the level, but the gameplay. It might look like something from 1997-1998, but it plays well.
Credits:
id Software, CodeImp, Wintex, XWE, Doomword, Jasc Software
Base:
New from scratch
Build time:
About 4.5 hours
Editor(s) used:
Doom Builder v2, Wintex, XWE, Doomword, Paint Shop Pro