MAP04: Fortress (The Twilight Zone)


The Twilight Zone maps 01-11

(01 - 11)
12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
Secret maps: 31 32

This level occupies the map slot MAP04. For other maps which occupy this slot, see Category:MAP04.

MAP04: Fortress is the fourth map of The Twilight Zone. It was designed by Paul Corfiatis and uses the music track "". The par time defined in MAPINFO is 1:00.


Map of Fortress
Letters in italics refer to marked spots on the map. Sector, thing, and linedef numbers in boldface are secrets which count toward the end-of-level tally.


The bold markers refer to the annotated map below.

A - At the start, go south up the staircase and you are in a room which has a switch raising up to the ceiling. On the western side of this room is a red key door, and on the NW side is a wooden barrier with red key markings on it which hides the red key switch. Press the green switch (as described first) in-between the cages to open a hidden door which heads eastwards. Progress through the door, up the stairs, down a lift and through a hallway that leads north then west. You will come to an area with red bricks where you can see the exit door and a red key in front of it. To the left of the entrance is a switch (A1) press it and go back to the red key door and on the right is a switch (A2) press it to raise the bridge (A3) and get the red key. The exit door requires the blue key.

B - Go through the red key door and down a lift, head west. There is a dark room in the SW which has a door (B5) that cannot be opened. Another door (B2) is also locked. Shoot the lava (B1) to open the door (B2). You are in a wooden library with eight bookshelves, four on each side. The bookshelf on the far NW side of the library contains a switch (B3) opens the door in the centre of the room. Progress through that door until you find a Hell knight and a switch (B4) which opens the door (B5). Head back south to that door and inside are four hanging Commander Keens. Kill them and the baron of Hell to get the blue key and progress back through the level to the exit. An arch-vile is behind the exit door so be extra careful.


  1. At the start, go south up the staircase and you are in a room which has a switch raising up to the ceiling. Behind there are two cages. At the SE corner of the room, press on the gargoyle to reveal a secret room revealing a backpack and some health. (sector 16)
  2. On the eastern hallway, you will come across a room with shotgun guys inside it where they can shoot through the windows at you. There is a blue armor inside that room. Press on the right (northern) window to lower it (sector 39) and go inside and grab the shotguns and blue armor.


Demo files[edit]

Areas / screenshots[edit]


Routes and tricks[edit]

Current records[edit]

The records for the map at the Doom Speed Demo Archive are:

Run Time Player Date File Notes
UV speed
NM speed
UV max
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The (absence of) data was last verified in its entirety on January 16, 2022.


Player spawns[edit]

This level contains five spawn points:

  1. facing north. (thing 83)
  2. facing west. (thing 84)
  3. facing east. (thing 85)
  4. facing west. (thing 92)
  5. facing south. (thing 145)


Map data[edit]

Things 153
Vertices 569*
Linedefs 640
Sidedefs 882
Sectors 138
* The vertex count without the effect of node building is 507.


This level contains the following numbers of things per skill level:

Technical information[edit]

Inspiration and development[edit]


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