BS_L21

BS L21
The starting area
Authors	Brian Sparks, Craig Sparks
Port	Vanilla Doom
IWAD	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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BS_L21 is a single-level PWAD for Doom that was released in August 1994. It was designed by Brian and Craig Sparks. That same month, the authors would release BS_L22.

Walkthrough

Map of BS_L21

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. The path south of the pillar with the switch that opens up the route to the blue key has a lift leading to a room with some items. En route to this room is a secret door to the west (marked with a different texture), leading to an outdoor area with two boxes of bullets, 4 shotgun shells (neither present on easy skill), three armor bonuses, 4-6 shotgun guys, and 0-3 imps. (sector 171)
2. The door immediately before the door opened by the aforementioned switch (leading to the blue key area) counts as a secret and is impossible to miss. (sector 81)
3. East of the red door is a path leading to a lift to a health bonus. There is a secret door to the east here leading to an armor. (sector 37)
4. North of the blue door is an alcove with a box of shotgun shells (hard skill only). The back wall of this is a secret door leading to a chainsaw (hard skill only) and a switch which opens up the windows to the outdoor area. (sector 147)
5. The nukage surrounding the yellow key counts as a secret and is impossible to miss. (sector 16)
6. En route to the yellow key area is a path leading to a lift - at the top is a secret area mirroring #3, leading to a medikit. (sector 41)

Areas / screenshots

• 

  Interiors

• 

  Red key area

• 

  Secret courtyard

• 

  Exteriors

• 

  Blue key area

• 

  Yellow key area

• 

  The exit

Speedrunning

Current records

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 November 30, 2021.

Deathmatch

Player spawns

This level contains four spawn points:

1. facing north. (thing 4)
2. facing north. (thing 9)
3. facing east. (thing 10)
4. facing north. (thing 14)

Statistics

Map data

Things	316
Vertices	597*
Linedefs	695
Sidedefs	973
Sectors	181

* The vertex count without the effect of node building is 517.

Things

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

Single-player
Monsters	1-2	3	4-5
Shotgun guy	19	26	38
Imp	10	30	51
Demon	0	2	4
Spectre	0	1	1
Cacodemon	0	0	1
Weapons	1-2	3	4-5
Chainsaw	0	0	1
Shotgun	1
Chaingun	0	1	1
Ammunition	1-2	3	4-5
Clip	2	2	5
Box of bullets	3	7	7
4 shotgun shells	0	4	4
Box of shotgun shells	3	3	4
Health & Armor	1-2	3	4-5
Stimpack	2
Medikit	1	2	2
Armor	1
Items	1-2	3	4-5
Armor bonus	21
Health bonus	19
Keys	1-2	3	4-5
Blue skull key	1
Red skull key	1
Yellow skull key	1
Miscellaneous	1-2	3	4-5
Teleport landing	2

Multiplayer
Monsters	1-2	3	4-5
Shotgun guy	19	26	38
Imp	11	33	57
Demon	0	2	4
Spectre	0	1	1
Cacodemon	0	0	1
Weapons	1-2	3	4-5
Chainsaw	0	0	1
Shotgun	1
Chaingun	0	1	1
Rocket launcher	1
Plasma gun	1
Ammunition	1-2	3	4-5
Clip	2	2	5
Box of bullets	18	22	23
4 shotgun shells	0	4	4
Box of shotgun shells	23	23	24
Box of rockets	22
Energy cell pack	14
Health & Armor	1-2	3	4-5
Stimpack	2
Medikit	1	2	2
Armor	1
Megaarmor	4
Items	1-2	3	4-5
Armor bonus	21
Health bonus	19
Supercharge	4
Keys	1-2	3	4-5
Blue skull key	1
Red skull key	1
Yellow skull key	1
Miscellaneous	1-2	3	4-5
Cooperative start	4
Deathmatch start	4
Teleport landing	2

See also

• BS_L22

External links

• BS L21 at Doomworld/idgames
• BS L21 at the Doom Speed Demo Archive (offers a demo of this level together with BS_L22)