This article is a stub. Please help the Doom Wiki by expanding it.
This level occupies the map slot MAP03. For other maps which occupy this slot, see Category:MAP03.

Constrained Base is the third map of Speed of Doom. It was designed by Josh Sealy and uses the Coldwires.midi, an original track by Stuart Rynn. The par time is unknown.


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. In the room with stairs around a nukage pool, jump to the platform under the yellow "Poison" sign.
  2. In the same room as above, try to run on the blue and metallic ledge, a hidden door can be opened to reveal a plasma gun.
  3. In the hallway immediately after the first spiral staircase, there will be a small square on the right wall that has a strobing light. Shoot it to reveal a secret with some armor.


Rooms with the keys


Current records

The Compet-n records for the map are:

Run Time Player Date File Notes
UV speed [1]
NM speed [2]
UV max [3]
NM100S [4]
UV -fast [5]
UV -respawn [6]
UV Tyson [7]
UV pacifist [8]

Miscellaneous demos

Run Time Player Date File Notes


Map data

Things 163
Vertices 2360
Linedefs 2289
Sidedefs 3731
Sectors 393


Monsters ITYTD and HNTR HMP UV and NM
Arch-viles 1
Cacodemons 2 3
Chaingunners 6 8
Demons 5 6 7
Hell knights 3 4
Imps 15 19 23
Lost souls 2 4
Revenants 1 2
Sergeants 5 11 12
Spectres 7 9
Troopers 10 6 7
Weapons ITYTD and HNTR HMP UV and NM
Chainsaws 1
Plasma guns 1
Shotguns 1
Powerups ITYTD and HNTR HMP UV and NM
Armor bonuses 6
Berserks 1
Green armors 1
Health bonuses 16
Medikits 2
Stim packs 3
Ammunition ITYTD and HNTR HMP UV and NM
Ammo boxes 2
Ammo clips 11
Shell boxes 5
Shells 6 8
Blue keycards 1
Red keycards 1
Community content is available under CC-BY-SA unless otherwise noted.