Doomsday Engine

In Doom II, level 18, The Courtyard, there is a small
structure that looks normal from the outside, but from
the inside, one of the walls is transparent and part of
the floor disappears revealing the sky.

When you start the level, leave the small building,
enter the courtyard and go straight ahead to a small
set of steps. There is a small structure at the top of
the stairs and another one to the left. These will open
to release imps. The one on the left looks normal from
the outside, but when you enter it, the right wall is
completely transparent and part of the floor is missing
allowing the sky texture to show through. This is
purely a graphical glitch though, as the wall still
prevents you from walking out the side of the building.

Also, along the sides of the courtyard are structures
with pillars. When you step in the right places, hidden
doors in the back walls of these structures will open
releasing imps. In the first alcove that opens in the
structure on the left (as you enter the courtyard), you
can see a thin vertical strip of the sky texture
through the corners of the opening if you stand at the
right angle. At other angles, you get a hall of mirrors
effect where the textures meet.

For reference, I'm using v1.8.6, under Windows 98SE
with a GeForce4 MX440 video card.

Labels: Graphics