From DoomWiki.org

The starting areaThe starting area
Author Eddie Nguyen
Port Vanilla Doom
Year 1994
Link Doomworld/idgames
This level occupies the map slot E2M1. For other maps which occupy this slot, see Category:E2M1.
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UCA (also known as Deimos Moon Base, Anguilla Crater) is a single-level PWAD for Doom. It was released in 1994 by Eddie Nguyen, and is the first in a series of single-level wads, preceding Talpoida, Diopatra, and Sapidus.


Map of UCA
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 red cavern, in the room with the four swirling energy columns, climbing onto the red panel in the east will open a closet that releases three demons. Inside of it is a backpack. (sector 142)
  2. From the same room as secret #1, a section of the wall has a red strip at the bottom. This is a secret door which leads to another tunnel. At the end, you must jump across the gap to the tunnel across from it, and then over another gap in the next tunnel. At the end is a wall of fire, which will disappear when pressed to reveal a teleporter. This leads to a walkway of fire with a door at the south. Opening it reveals a stash of items. (sector 115) It includes two medikits, eight rockets, a box of shotgun shells, and a chainsaw. Go north off the walkway to teleport back to the first room.
  3. In the same tunnel from which the energy columns are accessed, there is a drop-off in the northwest. At the bottom is the megaarmor. (sector 24)
  4. At one end of the green stone hallway is a face embedded in the wall. Shoot this face and a secret door will open nearby, to a computer room containing the yellow key. Circle around to the yellow door, which leads to a computer room with a teleport pad. It leads to the invulnerability sphere seen from the base's entry hall. (sector 187) After collecting it, turn back and walk to be brought back to the teleport pad to the base.


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 2:13.26 Eric Baker (The Green Herring) 2010-04-07 uca-213.zip
NM speed
UV max 6:24.86 Eric Baker (The Green Herring) 2010-04-07 uca-624.zip
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The data was last verified in its entirety on November 30, 2021.


Map data[edit]

Things 301
Vertices 1179*
Linedefs 1255
Sidedefs 1825
Sectors 231
* The vertex count without the effect of node building is 995.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]