E1M3: The Infirmary (The Invasion)

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The Invasion maps
The Rock
Project: Jupiter

M1 M2 M3 M4 M5 M6 M7 M8 M9

Planet Hell

M1 M2 M3 M4 M5 M6 M7 M8 M9

The Final Frontier

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 Infirmary is the third map in episode The Rock of The Invasion. It was designed by Paul Fleschute (Moe) and uses the music track "".


Map of The Infirmary
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. Open the door at the start and head to the northwest corner in this room. Press on the plain wall to collect a computer area map and a light amplification visor. This area counts as two secrets. (sector 236)
  2. See Secret #1. (sector 237)
  3. In the same room as above, head to the southwest corner and press on the west wall to find a backpack. This area counts as two secrets. (sector 239)
  4. See Secret #3. (sector 240)
  5. Open the yellow door at the start and press on the north wall past the first blue light. This opens up a passage below you which counts as two secrets. (sector 231)
  6. See Secret #5. (sector 232)
  7. Press on the back wall of Secrets #5 and #6 to open a teleporter. Follow the path and shoot the barrel to eventually reach the secret exit. Note that the teleporter and the sector you teleport in count as separate secrets, and the teleporter sector cannot be registered. (sector 235)
  8. See Secret #7. (sector 233)


Only 87% secrets is possible in this map. See Secret #7 for more info.

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
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist (normal exit)
UV pacifist (secret exit)

The (absence of) data was last verified in its entirety on February 21, 2022.


Map data[edit]

Things 231
Vertices 1335*
Linedefs 1384
Sidedefs 2016
Sectors 256
* The vertex count without the effect of node building is 1140.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]