Watching it now. Plan it out in DoomEd! Or, Build Engine if you need rooms over rooms.

Hah, that time lapse of the building process makes me think of the building process in many games. Make an LGR strategy game. SimClint. Take over the neighbourhood like in SimAnt.
1
0
2
Doom textured walls would be fantastic. Or rather, Duke Nukem.
0
0
1