MAP03: Outer Perimeter (Zaero: Episode 1)


Zaero: Episode 1 maps
This level occupies the map slot MAP03. For other maps which occupy this slot, see Category:MAP03.
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MAP03: Outer Perimeter is the third and final map of Zaero: Episode 1. It was designed by Steven Searle and uses the music track "Rage" by Sascha Dikiciyan (Sonic Mayhem), originally from Quake II. The par time defined in MAPINFO is 18:00.


Map of Outer Perimeter
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 first room, open the wall where the health bonuses are to get rockets and a medikit. (sector 100)
  2. In the southeasternmost room, head to the east wall and use the lower vent. Use the switch there to lower the middle with health bonuses. (sector 1136)
  3. Go north from the room where Secret #2 is, then head east a bit. Drop to the north to get shotgun shells, a stimpack, an ammo clip, and a box of ammo. (sector 1084)
  4. Shoot the wall north of the blue key to get shotgun shells and a computer area map. (sector 804)
  5. Open the blue door and head straight east to a wall with pipes. Lower it to get a blur artifact. (sector 649)
  6. Go towards the exit switch, then backtrack to the big intersection and head east. In this room, shoot the northwest wall and enter to find a medikit. (sector 583)


A shotgun guy (Thing 721) in the southwest 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
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 19, 2022.


Map data[edit]

Things 741
Vertices 5784*
Linedefs 5434
Sidedefs 9006
Sectors 1179
* The vertex count without the effect of node building is 4509.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]