MAP03: Underground Facility (Moonblood)

Moonblood maps
Episode 1 MAP01: UAC Starport MAP02: Waste Central MAP03: Underground Facility MAP04: The Courtyard MAP05: Infrastructure Sector MAP06: Central Command
Episode 2 07 08 09 10 11
Episode 3 12 13 14 15
Episode 4 16 17 18 19 20
Episode 5 21 22 23 24 25 26
Episode 6 27 28 29 30
Secret maps 31 32

This level occupies the map slot MAP03. For other maps which occupy this slot, see Category:MAP03.

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MAP03: Underground Facility is the third map of Moonblood. It was designed by Tomás Soares (Deadwing), who also composed the level's music track, "Underground Experiments".

Walkthrough

Map of Underground Facility

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.

Secrets

1. Open the red door and go into the room there which will open the southeast closet in the previous room. Press on the wall with slime to find a hidden room with a switch. This switch lowers the block near the closet, and you can ride this block to get a box of ammo. (sector 28)
2. In Secret #4, press on the green wall, then the switch. When you do this, quickly run west and open the yellow door, then head north before the next door closes to claim a soul sphere. (sector 60)
3. In the southwest room, trigger the lift that goes up to the west and as it rises, jump southwest to the ledge there to get a box of ammo and a chainsaw. (sector 96)
4. After crossing the bridge to the exit door, check the south wall that is slightly dimmed to reach a secret room with a switch. (sector 159)

Bugs

A demon (Thing 27) and three imps (71, 126, and 133) have no flags set for any of the three difficulty classes, so they do not actually appear in the level.

Speedrunning

Current records

The records for the map at the Doom Speed Demo Archive are:

Run	Time	Player	Date	File	Notes
UV speed	1:16.40	RedBoule	2026-03-01	mb03-11237.zip
NM speed
UV max	2:37.14	Laure	2022-08-08	mb03m237.zip
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist
NoMo	0:55.51	Laure	2023-03-29	mb03o055.zip

The data was last verified in its entirety on March 10, 2026.

Statistics

Map data

Things	192
Vertices	1198*
Linedefs	1423
Sidedefs	1967
Sectors	318

* The vertex count without the effect of node building is 1098.

Things

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

Single-player
Monsters	1-2	3	4-5
Zombieman	1	2	3
Shotgun guy	13	18	25
Heavy weapon dude	0	3	6
Imp	27	27	38
Demon	0	0	2
Spectre	2	3	3
Weapons	1-2	3	4-5
Chainsaw	1
Shotgun	1
Chaingun	1
Ammunition	1-2	3	4-5
Box of bullets	3
4 shotgun shells	5
Health & Armor	1-2	3	4-5
Stimpack	7
Medikit	4
Armor	2
Items	1-2	3	4-5
Armor bonus	14	14	15
Health bonus	30
Supercharge	1
Keys	1-2	3	4-5
Red keycard	1
Yellow keycard	1
Miscellaneous	1-2	3	4-5
Exploding barrel	5
Teleport landing	2

Multiplayer
Monsters	1-2	3	4-5
Zombieman	1	2	3
Shotgun guy	13	18	25
Heavy weapon dude	0	3	6
Imp	27	27	38
Demon	0	0	2
Spectre	2	3	3
Weapons	1-2	3	4-5
Chainsaw	1
Shotgun	1
Chaingun	1
Ammunition	1-2	3	4-5
Box of bullets	3
4 shotgun shells	5
Health & Armor	1-2	3	4-5
Stimpack	7
Medikit	4
Armor	2
Items	1-2	3	4-5
Armor bonus	14	14	15
Health bonus	30
Supercharge	1
Keys	1-2	3	4-5
Red keycard	1
Yellow keycard	1
Miscellaneous	1-2	3	4-5
Cooperative start	4
Exploding barrel	5
Teleport landing	2

External links

• Moonblood demos at the Doom Speed Demo Archive