MAP21: Slayer (The Plutonia Experiment)


Plutonia maps 21-30

01 02 03 04 05 06 07 08 09 10 11
12 13 14 15 16 17 18 19 20
(21 - 30)
Secret maps: 31 32

This level occupies the map slot MAP21. For other maps which occupy this slot, see Category:MAP21.

MAP21: Slayer is the twenty-first map of The Plutonia Experiment. It was designed by Milo Casali and uses the music track "Read Me While Listening to This" from Doom II. Like Doom II's MAP11: Circle of Death, the center of the level is a raised walkway ring, but otherwise the setup is not related.


Map of Slayer
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.


At the start of the level, drop into the platform collecting a soul sphere, super shotgun and a plasma gun. Jump to the floor and ride the lift up to the central walkway. Run around the walkway towards the western side and enter the side room. Run down towards the northern end of it and activate a switch. Return to the central walkway and to the eastern side with a red door, go into the side room and activate the switch. Enter the teleporter and you will be in an area overlooking the central walkway. Walk through the newly raised walkway towards the red key and grab the megasphere along the way.

As soon as you get the red key, the walkway will lower back towards the lava floor. Jump down to the lava, run towards the closest lift and return to the walkway. Return to the area with the red door and activate the switch behind it. Be careful as multiple enemies will be teleported, including an arch-vile. Run towards the southern end of the walkway, enter the room there and exit.



There are no official secrets in this level.


  1. From the north side of the ring-shaped ledge drop down to the south into the inner pool of blood. Turn around and push the skull switch to lower a lift and open an alcove straight ahead. There is a soul sphere, a radiation shielding suit and an arch-vile inside.

Areas / screenshots[edit]


As this level does not contain official secrets, the NM 100S category is redundant.

Routes and tricks[edit]

Current Compet-n records[edit]

The Compet-n records for the map are:

Run Time Player Date File Notes
UV speed 00:04 Looper 2011-12-14
NM speed 00:07 Jean-Charles Dorne (JCD) 2012-02-09
UV max 01:52 Drew DeVore (stx-Vile) 2002-05-24
UV -fast 03:47 Chris Ratcliff (Ryback) 2001-09-22
UV -respawn 01:17 Casey Alvis (Altima Mantoid) 2002-09-17
UV Tyson
UV pacifist 00:04 Looper 2011-12-14

The data was last verified in its entirety on July 6, 2020.

Current DSDA records[edit]

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

Run Time Player Date File Notes
UV speed 0:03.97 depr4vity 2020-12-09 Cross-listed from Pacifist
Also Reality
NM speed 0:04.51 Brookie 2022-04-24
UV max 1:49.63 Zero-Master 2021-08-19
UV -fast 2:00.03 Tatsuya Ito (Tatsurd-cacocaco) 2022-11-03
UV -respawn 1:17.51 Casey Alvis (Altima Mantoid) 2002-09-17
UV Tyson 29:48.63 z0diac 2006-10-16 Includes Turkka's three failed attempts
UV pacifist 0:03.97 depr4vity 2020-12-09 Also Reality
NoMo 0:03.69 depr4vity 2020-12-28
Stroller 0:07.54 Billa 2022-11-04

The data was last verified in its entirety on November 17, 2022.


Player spawns[edit]

This level contains seven spawn points:

  1. facing north-east. (thing 23)
  2. facing north-west. (thing 24)
  3. facing west. (thing 182)
  4. facing west. (thing 183)
  5. facing east. (thing 184)
  6. facing east. (thing 185)
  7. facing west. (thing 186)


Map data[edit]

Things 193
Vertices 456*
Linedefs 467
Sidedefs 719
Sectors 58
* The vertex count without the effect of node building is 390.


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


  • The music for this level is the same as for Doom II's intermission text screens, and, indeed, there is a text screen just before this level starts. Since players do not usually stay at the text screens for more than a minute, playing this level is a certain way to hear the whole nearly five-minute music track.
  • This map is one of the levels of Plutonia in which the amount of monsters and objects are the same, regardless of the skill level selected (the others being MAP30 and the super-secret level MAP32).

External links[edit]