MAP31: Great Balls of Fire (Icarus: Alien Vanguard)


Icarus secret maps

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Secret maps

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.


Map of Great Balls of Fire
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.


Take any of the teleporters at the start. When you arrive, just open the door that is to the east. You will see a teleporter at the end of ledge. Do not go in it, instead, jump to the water below on the right and you will find the red skull key in the corner there. After picking it up, go around the light brown rocks until you find a switch. Flip this switch to lower one of the rocky walkways as a lift, then head northwest into the opening before it rises. In the marble hall, there are mancubi and revenants, and after killing them, lower the wall to the east to find the normal exit teleporter.

Other points of interest[edit]



  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.


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 (normal exit) 0:18.60 Thomas Baden (Scorpius) 2020-02-28 Cross-listed from Pacifist
UV speed (secret exit) 0:50.86 Ilya Lazarev (joe-ilya) 2013-09-16 Cross-listed from Pacifist
NM speed (normal exit) 0:18.94 Andrea Rovenski (Cyberdemon531) 2023-01-12 Also Pacifist
NM speed (secret exit)
UV max 1:35.20 Andrea Rovenski (Cyberdemon531) 2023-01-10
NM 100S 0:44.23 Revved 2009-12-20
UV -fast 1:58.71 Andrea Rovenski (Cyberdemon531) 2023-03-28
UV -respawn
UV Tyson
UV pacifist (normal exit) 0:18.60 Thomas Baden (Scorpius) 2020-02-28
UV pacifist (secret exit) 0:50.86 Ilya Lazarev (joe-ilya) 2013-09-16
NoMo 100S 1:57.54 TeamTNT 1996-04-17 Walkthrough demo
Stroller (normal exit) 0:35.80 Gosu_Noob 2023-03-26

The data was last verified in its entirety on April 16, 2023.

Miscellaneous demos[edit]

Run Time Player Date File Notes
UV speed 15-31 00:36 Graham Burgess (Grazza) 2004-01-20 Begins on MAP15: Waste Disposal to pick up a rocket launcher in order to do a suicide exit on this level.

The data was last verified in its entirety on January 16, 2022.


Player spawns[edit]

This level contains five spawn points:

  1. facing west. (thing 4)
  2. facing east. (thing 5)
  3. facing south-east. (thing 6)
  4. facing east. (thing 7)
  5. facing west. (thing 98)


Map data[edit]

Things 194
Vertices 1093*
Linedefs 1077
Sidedefs 680
Sectors 211
* The vertex count without the effect of node building is 896.


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

Technical information[edit]

Inspiration and development[edit]


  • 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.
  • The map's name "Great Balls of Fire" may be a reference to the Jerry Lee Lewis song of the same name.

See also[edit]


External links[edit]