Doom Wiki
This level occupies the map slot MAP31. For other maps which occupy this slot, see Category:MAP31.

MAP31: Great Balls of Fire is the secret level of Icarus: Alien Vanguard. It takes place in a small simulation, and was designed by Jim Lowell. It uses the music track "Gresta" by Tom Mustaine.


Icarus MAP31 map

Map of MAP31

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



  1. After teleporting from the map start you are in a large hall. Run up the western stairway and look to the north to find that one of the sconces is missing a torch. Lower the back wall to find a nukage pool, surrounded by a walkway (sector 66) where some useful items rest on: a plasma gun, a bulk cell, a backpack, a soul sphere and an armor: a green one on hard or a blue one on easy and medium skills.
  2. After entering the red rock cavern east of the large hall mentioned in secret #1, look to the north to see a gray pillar. Drop from the brick walkway beside this pillar and ascend the stairway to its northeast. At the apex (sector 79) you can acquire two boxes of shells, a bulk cell and a megasphere.


  1. Secret exit: Standing in front of the regular map exit, teleport back and pass the door. In this marble room, head to the northwestern corner and look to the southwest to find a section of wall with horizontal lines carved in it. Open it to find a switch that you trigger and return to the brick walkway at the red rock cavern's entrance. Look to the north to find that the gray pillar southwest of official secret #2 has opened to reveal a lava pool; enter it to be taken to another simulation gate. Enter it and you will find yourself in another exit hall with a simulation portal marked "RESTRICTED" and "TOP SECRET". Open the barrier and step into the portal to go to the super secret level, MAP32: Prestidigitation.


Current records[]

The records for the map on the Doomed Speed Demos Archive are:

Run Time Player Date File Notes
UV speed
NM speed 00:20 Graham "Grazza" Burgess 2004-01-20
UV max 05:53 George Bell 1996-06-19
NM100S 00:57 Graham "Grazza" Burgess 2004-01-20 [1]
UV -fast 05:16 Michael "Prower" Reid 1997-04-03
UV -respawn
UV Tyson
UV pacifist

Miscellaneous demos[]

Run Time Player Date File Notes
UV speed 15-31 00:36 Graham "Grazza" Burgess 2004-01-20 [2]
UV max TAS 02:22 Andy Olivera 2000-01-25


Map data[]

Things 194
Vertices 1093
Linedefs 1077
Sidedefs 680
Sectors 211


Monsters ITYTD and HNTR HMP UV and NM
Sergeants 3 3 3
Troopers 5 5 5
Chaingunners 0 0 4
Pain elementals 1 4 2
Imps 7 7 7
Cacodemons 3 2 8
Hell knights 2 0 0
Barons of hell 0 2 0
Revenants 0 0 2
Arachnotrons 6 6 7
Mancubi 0 0 2
Weapons ITYTD and HNTR HMP UV and NM
Super shotguns 1 1 1
Chainguns 1 1 1
Plasma guns 1 1 1
Ammunition ITYTD and HNTR HMP UV and NM
Bullet boxes 1 1 1
Shell boxes 5 5 5
Rocket boxes 12 12 12
Bulk cells 5 5 5
Powerups ITYTD and HNTR HMP UV and NM
Backpacks 1 1 1
Medikits 3 3 3
Stimpacks 11 11 11
Soul spheres 1 1 1
Megaspheres 1 1 1
Green armors 0 0 2
Blue armors 2 2 0
Red skulls 1 1 1


When the level's title is shown on the intermission screen, Jim Lowell's name is not presented in all caps. This is the only level in Icarus for which this occurs.


  1. This demo is erroneously listed as a UV100S demo on the Doomed Speed Demos Archive.
  2. This demo begins on MAP15: Waste Disposal, where the rocket launcher is acquired, and the secret exit is used, followed by a rocket-facilitated death slide on this level.

External links[]