E1M3: The Monster Generators (The Beginning of the End (part 1))

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The Beginning of the End (part 1) maps
Episode 1
Episode 2

M1 M2 M3 M4 M5 M6 M7 M8 M9

This level occupies the map slot E1M3. For other maps which occupy this slot, see Category:E1M3.
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E1M3: The Monster Generators is the third map in the first episode of The Beginning of the End (part 1). It was designed by Emil Brundage (NaturalTvventy) and uses the music track "".


Map of The Monster Generators
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. At the start, enter the west cave until you reach the water. Enter the east tunnel to get to a chaingun. (sector 27)
  2. In the large area at the center of the map, flip the switch at the southeast end and take the lift up. Head east and north, behind the ledge, then through the wall. At the end you will find a soul sphere and the yellow key. (sector 126)
  3. Open the door leading to the blue key and you will notice that the door behind the window will be open as well. Backtrack to this area and enter the room to get a chainsaw and an invulnerability. (sector 154)
  4. Open the blue door to the normal exit area, then head southwest and notice the bottom ridge on the northwest wall as you go. Open this wall and head west to get two stimpacks and a backpack (these items are in two different secrets). (sector 216)
  5. See Secret #4. (sector 219)
  6. See Secret #4. (sector 221)


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 (normal exit)
UV speed (secret exit)
NM speed (normal exit)
NM speed (secret exit)
UV max 7:57.17 Trevor Cheng (Daiyu Xiaoxiang) 2012-12-30 end113-757.zip
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist (normal exit)
UV pacifist (secret exit)

The data was last verified in its entirety on December 13, 2021.


Player spawns[edit]

This level contains seven spawn points:

  1. facing north. (thing 445)
  2. facing north-west. (thing 446)
  3. facing north-west. (thing 447)
  4. facing east. (thing 448)
  5. facing west. (thing 449)
  6. facing west. (thing 450)
  7. facing west. (thing 451)


Map data[edit]

Things 474
Vertices 1670*
Linedefs 1607
Sidedefs 2342
Sectors 227
* The vertex count without the effect of node building is 1395.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]