MAP20: 20,000 Monsters Under the Sea (The Mapwich 2)


The Mapwich 2 maps 12-22

01 02 03 04 05 06 07 08 09 10 11
(12 - 22)

This level occupies the map slot MAP20. For other maps which occupy this slot, see Category:MAP20.
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MAP20: 20,000 Monsters Under the Sea is the twentieth map of The Mapwich 2: The Mapwichening. It was designed by Insane_Gazebo and Dac, and uses the music track "Birdsong" from Interception, composed by Stuart Rynn (stewboy).


Map of 20,000 Monsters Under the Sea
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. After the wall at the southwest end of the first area lowers, climb the steps behind it, then make your way to the southeast corner. Go through the shrubbery to get a computer area map. (sector 4101)
  2. In the largest area, make your way to the northeast teleporter, then drop down to the right of it and drop northeast. Enter the teleporter there to get to a sandwich section with armor bonuses. (sector 7174)


Duright the first fight, seven mancubi cannot teleport out of the monster closet on easy skill levels (Hey, not too rough or lower).

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
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The (absence of) data was last verified in its entirety on January 3, 2022.


Map data[edit]

Things 7731
Vertices 56861*
Linedefs 62963
Sidedefs 45996
Sectors 7759
* The vertex count without the effect of node building is 56861.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]