MAP26: Main Laboratory II (STRAIN)


STRAIN maps 21-30

01 02 03 04 05 06 07 08 09 10 11
12 13 14 15 16 17 18 19 20
(21 - 30)
Secret maps: 31 32

This level occupies the map slot MAP26. For other maps which occupy this slot, see Category:MAP26.
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MAP26: Main Laboratory II is the twenty-sixth map of STRAIN. It was designed by Holger Nathrath, Charlie Patterson and Eric Roberts, and uses the music track "In the Heart of Darkness" by David Shaw (Tolwyn).


Map of Main Laboratory II
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. In the yellow key room, drop to the nukage and use the wall with the skull to the northeast to get rockets and an ammo clip. (sector 167)
  2. In the southernmost room, go to the southern end and open up the middle wall to get a rocket launcher (not on Hey, Not Too Rough or lower). (sector 56)
  3. In the previous secret, use the northern lift for an NFG. (sector 57)
  4. At the south end of the southernmost room, press on the column with the gray side on its south end to get a battery. (sector 196)
  5. In the room past the blue key door, an arrow of health bonuses points to a wall. Open it and go up to get ammo clips, a rocket, and a soul sphere. (sector 158)
  6. In the same room, open the door and use the skull switch to the north. Go back to the southernmost room and step on the red square at the east end to teleport to a megaarmor. (sector 36)


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
NM speed
UV max 2:22.03 Nikolay Kamnev (Heretic) 2008-06-11
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The data was last verified in its entirety on June 2, 2022.


Player spawns[edit]

This level contains eight spawn points:

  1. facing north-east. (thing 4)
  2. facing east. (thing 5)
  3. facing south-west. (thing 6)
  4. facing east. (thing 157)
  5. facing east. (thing 158)
  6. facing east. (thing 159)
  7. facing west. (thing 160)
  8. facing north. (thing 161)


Map data[edit]

Things 254
Vertices 683*
Linedefs 826
Sidedefs 1153
Sectors 201
* The vertex count without the effect of node building is 619.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]