MAP20: Portal Facility (TNT: Revilution)


TNT: Revilution maps 12-20

01 02 03 04 05 06 07 08 09 10 11
(12 - 20)
21 22 23 24 25 26 27 28 29 30
Secret maps: 31 32

This level occupies the map slot MAP20. For other maps which occupy this slot, see Category:MAP20.
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MAP20: Portal Facility is the twentieth map of TNT: Revilution. It was designed by James Cresswell (Phobus) and uses the music track "Hell's Furnace," by Tristan Clark. The par time is 3:15.


Map of Portal Facility
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.


Other points of interest[edit]


  1. In the southeast corner of the main area to the right of the long corner, a pool of blood is in front of a static terminal. Lower this terminal to find a berserk pack. (sector 113)
  2. In the northernmost room, climb the steps all the way to the top. Up here, you can jump to the rocket launcher and backpack, or jump gently down onto a ridge containing health bonuses. If you follow the health bonuses, you will find a small room with a switch. Instead of dropping straight down to this room, jump onto the switch, then to the ledge here to get a green armor. (sector 206)


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 8:22.51 lirui1001 2019-09-24
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The data was last verified in its entirety on April 4, 2022.


Player spawns[edit]

This level contains eight spawn points:

  1. facing east. (thing 78)
  2. facing east. (thing 79)
  3. facing west. (thing 80)
  4. facing west. (thing 81)
  5. facing west. (thing 82)
  6. facing south-west. (thing 83)
  7. facing east. (thing 84)
  8. facing east. (thing 85)


Map data[edit]

Things 386
Vertices 3573*
Linedefs 3855
Sidedefs 5572
Sectors 319
* The vertex count without the effect of node building is 3086.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]