A replacement for Episode 1 of DOOM, in E1 style. This wad is an attempt to capture the atmosphere of "Knee Deep in the Dead" and to evoke nostalgia in players who enjoyed the original DOOM levels.
The maps are meant to be reminiscent of Episode 1 of the original DOOM, which also means they are under-detailed by today's standards and are quite easy, like the original DOOM was. If you want more challenge, try nightmare difficulty and see how long you last.
I included a batch file, phobmass.bat, which you can use if you run ZDOOM 2.4.1. The batch file sets flags which make ZDOOM handle like old-school DOOM, with no freelook or jumping, which is how this wad should be played.
John Romero and Sandy Petersen, as their levels were my primary inspiration, Chubzdoomer and others whose tutorials I've studied, Judge and Grafton Brazil for playtesting and offering some ideas/critiques, Christian Hansen for playtesting, giving me some general level design tips and going out of his way to be helpful, and the few brave souls who slogged their way through my first level and gave honest criticism.