I tried making a vanilla Doom 2 single player level with at most 100 lines.   benjaminb1.7z Please run it with -dehlump on Chocolate Doom.   Now, this is my 1st <100 line map. Since I didn't just want to make a tiny, glorified arena, I decided to give my map a primarily triangle-based motif.   So I drew a bunch of triangles and gave them random ceiling and floor height values. Then, I just connected them together, trying to make something navigable. Then, I