MAP31: Terraço (Ozonia)


Ozonia maps
Episode 1: Root

01 02 03 04 05 06 07 08 09 10 11

Episode 2: Ozônia

12 13 14 15 16 17 18 19 20

Episode 3: Abyss

21 22 23 24 25 26 27 28 29 30

Secret maps
This level occupies the map slot MAP31. For other maps which occupy this slot, see Category:MAP31.
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MAP31: Terraço is the first secret map of Ozonia. It was designed by Tomás Soares (Deadwing), who also composed the level's music track, "Groovy," originally used in Exomoon. The par time defined in MAPINFO is 16:00.


Map of Terraço
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]

At the far north-east of the map, in the upper balcony area reachable by two facing lifts, is a knife-switch which opens the walls to the north, releasing pinkies, spectres, and an arch-vile. Go into that northern hall, then proceed west, jump the gap, and go up the stairs, to find a soul sphere.


  1. There are two ways to reach the secret exit. (sector 382)
    1. After you get the red key at the regular exit, backtrack to the area with the walkways you raised, at the center-north the map. At the south-and-center-east of this general area is an upper room with a blue UAC-logo floor. Here, open a red door, then use the switch to lower the southwest wall outside. Ride the lift back up.
    2. Just to the eastern half of the map is a lift, guarded by a yellow door (heading east) and a blue post (returning from the east/lower side). To the north of this building is an open nukage pit, reachable from the lower/eastern side. At the north-west of this pit is a short rectangular entryway, hiding a lift up to the same room as the red-door-route.
  2. When you first head outside at the start, go to the left/north. Jump southwest off the ledge at an angle, so you land on a lower ledge, with health bonuses, a mancubus, and some barrels. This is the secret (sector 439), and you can get a soul sphere by pressing on the wall to the north.


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 6:24.71 Andrea Rovenski (Cyberdemon531) 2022-11-10
UV Tyson
UV pacifist (normal exit)
UV pacifist (secret exit)
NoMo 100S 0:55.40 Andrea Rovenski (Cyberdemon531) 2022-11-10

The data was last verified in its entirety on November 17, 2022.


Map data[edit]

Things 733
Vertices 3471*
Linedefs 3663
Sidedefs 5595
Sectors 736
* The vertex count without the effect of node building is 2914.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]