This is a map that I made that replaces the Tower of Babel (E2M8) stage in Ultimate DOOM. Keep in mind that this isn't E1M1.
How to Play:
Extract the .wad file out of the zip folder
Drag and drop the .wad file onto your source port (preferably GZDoom or PRBoom+)
Either open the console and type "map e2m8" or just play episode 2 until you reach e2m8. Alternatively you can also use the "idclev28" cheat code.
Keep in mind that this map is NOT E1M1. It is E2M8.
Made using Ultimate Doom Builder