MAP21: Mt. Erebus (Console Doom)


Console level navigator
Jaguar, 3DO, GBA, PlayStation, Saturn
Mt. Erebus

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This is a console version
of a PC level.

This level occupies the map slot MAP21. For other maps which occupy this slot, see Category:MAP21.
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MAP21: Mt. Erebus is the twenty-first level of console versions of Doom, based on the original E3M6: Mt. Erebus with modifications made to adapt to the consoles' limitations. It was converted by American McGee and originally designed by Sandy Petersen. The map first appeared in Atari Jaguar version, and is additionally used in the 3DO, Game Boy Advance, Sony PlayStation, and Sega Saturn versions.


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


Other points of interest[edit]


  1. (sector 67)
  2. (sector 104)


PlayStation only[edit]

  • One of the walls in the marble building is displayed distorted due to a wrong Y-offset setting (linedef 341).
  • (On UV skill level only) In the brick building of the separate east part of the map, a demon and a spectre are stuck due to a wrong thing arrangement (things 73 and 74).

Comparison of versions[edit]

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Numerous changes exist in the level as compared to its PC version:

Geometry simplification[edit]

  • The size of the map is significantly reduced. The water pit in the north is removed, along with most of the lava and nearly all the buildings in those areas. The building near the passage leading to the blue door, which contains cacodemons, remains.

New design[edit]

Some rooms in the level were redesigned:

  • The wooden building on the east side of the level is completely cut off from the rest of the level. It can be accessed using the hidden teleporter in the marble building on the north side of the map (this teleporter sends you to a building in the water pit in the PC version of the level). After teleporting to the building, you must enter it and find a yellow skull key, which opens a nearby door revealing a teleporter that sends you back to the main level.
  • The window at the top of the building in front of the start point has been removed.
  • The four alcoves in front of the marble building, which contain imps, are larger and have walls in front of them instead of grate textures.
  • The blue door uses a wooden door texture instead of a skull pillar texture.


  • A mancubus is added to the island on the west side of the level on UV skill level.
  • This level has no secret exit due to the removal of the water pit. The next level with a secret exit is MAP29: Twilight Descends, which takes you to MAP57: The Marshes.


Some additional changes were made in the PlayStation port:

  • Lorem ipsum

Areas / screenshots[edit]

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Atari Jaguar screenshots[edit]

3DO screenshots[edit]

PlayStation screenshots[edit]

Sega Saturn screenshots[edit]

Game Boy Advance screenshots[edit]


The map uses the following music tracks:

Port Track Composer Notes
Atari Jaguar "The Imp's Song" Robert Prince Only plays in the intermission screen after the map is completed.
3DO "Untitled" Robert Prince Re-orchestrated version played by live band
Game Boy Advance "Sinister" Robert Prince
Sony PlayStation "Lamentation" Aubrey Hodges
Sega Saturn "Breath Of Horror" Aubrey Hodges


Player spawns[edit]

This level contains six spawn points:

  1. facing north-west. (thing 215)
  2. facing north-east. (thing 216)
  3. facing south. (thing 217)
  4. facing south. (thing 218)
  5. facing south-west. (thing 219)
  6. facing south-east. (thing 226)


Map data[edit]

Things 229
Vertices 709*
Linedefs 605
Sidedefs 821
Sectors 112
* The vertex count without the effect of node building is 479.


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

Technical information[edit]

Inspiration and development[edit]



Console Doom levels - Atari Jaguar, 3DO, Game Boy Advance
Secret levels:
Console Doom levels - Doom for Sony PlayStation and Sega Saturn
Ultimate Doom
Secret levels:
Doom II
The Star Base:
The City:
Secret levels: