MAP01: The Fistula (Master Levels)


Master Levels maps


This level has a
console version.

This level occupies the map slot MAP01. For other maps which occupy this slot, see Category:MAP01.

The Fistula is a map that is part of the Master Levels for Doom II. It was designed by Christen Klie, and is contained in the file FISTULA.WAD. In the PlayStation Doom port, it is the sixth map of the first episode and uses the music track "The Foulness Consumes".


Map of The Fistula
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.


Yellow key

In the starting place, open the northern door (in fact, these are lifts masked as doors). At the intersection, head to the east and forth to the lift. Descend to the very bottom and go to the south. Head to the west and beware the trap of teleporting monsters. Use the lift, head to the south, come around and go to the very end at the east. Walk upstairs to the arrow that points to the wall. Open the wall and head to the area with nukage in the middle. Carefully walk around the border of the pit. If you fall, you cannot get out. Enter the teleporter. In the starting area, the teleporter with the yellow key has lowered. Take the key. You will be teleported back to the area with the nukage pool.

Blue key

There are two ways to get the blue key. The first one described below is shorter, but you need to do a grab.

  • In the nukage pool room, re-enter the teleporter and return to the intersection. Use the northern way and open the yellow door. Straferun to get the blue key.
  • Go past the nukage pit again. Press the metal wall in front of you to enter a lift you used recently. This time, exit to the north and proceed to the stairs. On the top, enter the large section that lowers as a lift. Press the switch at the area's eastern end and move to the opposite end. Go up the stairs and open the yellow door in the outdoor area. Have the blue key.

The key room also contains much ammo.

Red key

At the intersection, use the western way. Open either blue bar in the south or north and walk upstairs. Take the red skull key.


Come back to the starting area and use the eastern door (the lift, more precisely). Press the green button in the west of the room to lower the platform. Get to the tall room with three columns and a staircase. Go outside, walk around and use the red key door in the east. Beware the arch-vile in the exit room. Press the switch.

Other points of interest[edit]


  1. At the foot of the staircase to the east of the blue key room, a wall segment in the south differs noticeably in appearance from the others. This is a secret door that requires the red key. Once you obtain it, open this door to find a room with a megasphere guarded by former humans. (sector 107)


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 1:05.74 Phoenix 2021-08-04
NM speed
UV max 2:40.69 vdgg 2020-02-20
NM 100S 1:56.97 Jean-Charles Dorne (JCD) 2021-07-08
UV -fast
UV -respawn
UV Tyson
UV pacifist

The data was last verified in its entirety on January 15, 2023.


Player spawns[edit]

This level contains six spawn points:

  1. facing east. (thing 154)
  2. facing north. (thing 155)
  3. facing west. (thing 156)
  4. facing west. (thing 157)
  5. facing north-west. (thing 158)
  6. facing south-west. (thing 159)


Map data[edit]

Things 195
Vertices 922*
Linedefs 905
Sidedefs 1254
Sectors 172
* The vertex count without the effect of node building is 728.


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

Technical information[edit]

Differences between PC and PlayStation versions[edit]

  • The green nukage was replaced with brown slime in the eastern pit.
  • In the same area, a button for getting out from the pit was added.
  • Secret #1 no longer requires the red key to enter.

Inspiration and development[edit]


  • In medicine, a fistula is an abnormal connection or passageway between two epithelium-lined organs or vessels that normally do not connect.

See also[edit]


External links[edit]