E2M5: Atmospheric Processor (Aliens TC)

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Aliens TC maps

Bonus maps: E3M1, E3M2

This level occupies the map slot E2M5. For other maps which occupy this slot, see Category:E2M5.

E2M5: Atmospheric Processor is the fifth map of Aliens TC. It was designed by Justin Fisher, and contains a secret exit to E2M9: Alien Host Ship.

The map's subtitle on the intermission screen is Retreat to landing pads. In automap mode, the title is given as E2M5: Operations.


Map of Atmospheric Processor
Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count toward the end-of-level tally.


Other points of interest[edit]

The secret exit is located to the west of the normal exit, and is accessed from the central building via a yellow door (there is a yellow key inside the building).


Four sectors are marked as secret: (sector 233), (sector 293), (sector 301), and (sector 316). However, none of these have any sidedefs, so do not actually appear in the level, thus the maximum obtainable secret percentage is 0%.


Demo files[edit]

Areas / screenshots[edit]


As the secrets in this map can not be activated without cheating (see secrets), a NM100S run for this map is redundant. Other categories may ignore the secret requirement in this case.

Routes and tricks[edit]

Current records[edit]

The records for the map on the Doomed Speed Demos Archive are:

Style Time Player Date File Notes
UV speed
NM speed
UV max
UV -fast
UV -respawn
UV Tyson
UV pacifist

Miscellaneous demos[edit]

Style Time Player Date File Notes

This information was last verified in its entirety on January 15, 2018.



Map data[edit]

Things 471
Vertices 2159*
Linedefs 2119
Sidedefs 3833
Sectors 333
* The vertex count without the effect of node building is 1704.


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

Monsters 1-2 3 4-5
Egg (dormant) 11 11 11
Egg (hatching) 3 5 6
Face hugger 3 7 7
Alien warrior 9 13 11
Alien drone 3 5 4
Alien warrior (exploding) 0 1 5
Powerups 1-2 3 4-5
Armor 2 2 2
Medikit 2 1 1
Stimpack 4 4 2
Weapons 1-2 3 4-5
Shotgun 1 1 1
Smart-gun 1 1 1
Ammunition 1-2 3 4-5
Clip 8 12 11
Box of bullets 1 0 0
4 shotgun shells 5 5 5
Grenade 3 3 2
Keys 1-2 3 4-5
Blue keycard 1 1 1
Red keycard 1 1 1
Yellow keycard 1 1 1

Technical information[edit]

Inspiration and development[edit]

During development, this level became so large that it was split in two, the other part being E3M1: Bonus Level.


External links[edit]