A further advance of the techniques shown in "Untextured Walls". In this case, you can stack openings in a wall. A nice hack... and correctly done, nearly invisible to the player.

Sorry, no description given at this time.

Sorry, no description given at this time.

A cool demo of what can be done with untextured walls. Hacks, all, but in the right hands, they can make the architecture in Marathon levels look more realistic.