MAP18: The Edge (Mars War)


Mars War 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 MAP18. For other maps which occupy this slot, see Category:MAP18.

MAP18: The Edge is the eighteenth map of Mars War. It was designed by Nathan Lineback and uses a MIDI version of "Smoke on the Water" by Deep Purple, converted from a tracker module by Bjørn Lynne (Dr. Awesome).

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Map of The Edge
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. Head northeast from where the red key is located until you find a brown wall with yellow lights. Open it to find a green armor, shotgun shells, and a medikit. (sector 36)
  2. Behind where the red key is located, open the wall opposite of where the lift is to find a radiation suit. (sector 51)
  3. At the large flesh hallway, go south at the fork and keep going until you see an eye switch on the north wall. Shoot it, then take the lift upwards. Up here you will find a green armor, a box of ammo, and health and armor bonuses. (sector 162)
  4. Continue along the hallway past Secret #3 to the door and in the next room, shoot the barrels in the northwest corner. Open the wall with the blue banner to get a shotgun, a box of shotgun shells, and a medikit. (sector 172)
  5. In the same room as above, use the table to lower it, then get on it and look to the right. Shoot the green eyes on the wall, then look to the north and shoot the face there as well. Look to the south to spot cacodemons in front of a wall with eye switches. Shoot any of these switches to open the wall with red banners just west of the table. Take the lift up, then press on the wall straight ahead with the large bird on it. The next room is a black room with a flesh column in the middle. Shooting at the right, left, and top sides of this column will open up three different secrets, each containing numerous goodies. (sector 156)
  6. See Secret #5. (sector 158)
  7. See Secret #5. (sector 74)
  8. Now go all the way west to the red room and use either blue block as a lift up. Shoot at the swastika to find a soul sphere. (sector 84)


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 0:39.77 Andromeda 2021-09-06 Cross-listed from Pacifist
NM speed
UV max 4:00.20 Memfis 2011-03-19
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist 0:39.77 Andromeda 2021-09-06

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


Player spawns[edit]

This level contains nine spawn points:

  1. facing south-west. (thing 4)
  2. facing east. (thing 5)
  3. facing east. (thing 6)
  4. facing north. (thing 7)
  5. facing east. (thing 249)
  6. facing west. (thing 250)
  7. facing north. (thing 251)
  8. facing east. (thing 252)
  9. facing south-east. (thing 253)


Map data[edit]

Things 311
Vertices 1091*
Linedefs 1167
Sidedefs 1473
Sectors 177
* The vertex count without the effect of node building is 980.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]