E1M4: Quarantine Zone (Doom the Way id Did: The Lost Episodes)

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DtWiD: The Lost Episodes maps
Knee-Deep in the Dead
The Shores of Hell

M1 M2 M3 M4 M5 M6 M7 M8 M9


M1 M2 M3 M4 M5 M6 M7 M8 M9

Thy Flesh Consumed

M1 M2 M3 M4 M5 M6 M7 M8 M9

Base Instinct

M1 M2 M3 M4 M5 M6 M7 M8 M9 M0

The Final Gate

M1 M2 M3 M4 M5 M6 M7 M8 M9

This level occupies the map slot E1M4. For other maps which occupy this slot, see Category:E1M4.

E1M4: Quarantine Zone is the fourth map of the Knee-Deep in the Dead episode in Doom the Way id Did: The Lost Episodes. It was designed by Lorenzo Davia (Ultimate Lorenzo).

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Map of Quarantine Zone
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 starting room, press on the wall behind the shotgun to find a dark passage with health bonuses, a medikit, a box of ammo, and an imp. (sector 173)
  2. Grab the blue key to open the eastern closet. Go to the medikit in the back to lower a lift. On the other side is a light amplification visor. (sector 69)
  3. Ride that same lift up and go north to get a backpack. (sector 107)
  4. In the room before the blue door, open the northwest corner and follow the corridor to a lift leading to a rocket launcher, a megaarmor, rockets, and a medikit (the megaarmor and rockets will not be there on Ultra-Violence or higher). (sector 4)
  5. At the supplies mentioned in the previous secret, go north through the nukage and northeast until you reach a box of rockets, a soul sphere, and a radiation suit. (sector 84)


A multiplayer-only rocket launcher (Thing 44) has no flags set for any of the three difficulty classes, so it does not actually appear in the level.

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 1:38.77 Guanlan Chen (GarrettChan) 2021-09-04 l1e4-138.zip
NM speed
UV max
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The data was last verified in its entirety on December 7, 2021.


Player spawns[edit]

This level contains four spawn points:

  1. facing south-west. (thing 2)
  2. facing east. (thing 5)
  3. facing north-east. (thing 39)
  4. facing north-west. (thing 40)


Map data[edit]

Things 223
Vertices 868*
Linedefs 978
Sidedefs 1290
Sectors 176
* The vertex count without the effect of node building is 774.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]