E1M9: Central Processing (The Invasion)

The Invasion maps
The Rock E1M1: Launch Command E1M2: Storage Area E1M3: The Infirmary E1M4: Astoroid Mining Project E1M5: The Caves E1M6: Shipping Area E1M7: The Observatory E1M8: Command Station E1M9: Central Processing
Project: Jupiter M1 M2 M3 M4 M5 M6 M7 M8 M9
Planet Hell M1 M2 M3 M4 M5 M6 M7 M8 M9
The Final Frontier M1 M2 M3 M4 M5 M6 M7 M8 M9

This level occupies the map slot E1M9. For other maps which occupy this slot, see Category:E1M9.

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E1M9: Central Processing is the ninth and secret map in episode The Rock of The Invasion. It was designed by Paul Fleschute (Moe).

Walkthrough

Map of Central Processing

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. In the blue key room, pick up the blue key, then press on the misaligned wall to the north. The switch here lowers a lift to the east, taking you back to the hub. (sector 119)
2. In the northeast field, head down the steps to the nukage and before using the lift, head to the north wall and use it. Take the lift down afterwards, then press the switch at the southeast end to open the northeast corridor. Follow it to the next switch and there will be a path going south. There will be medikits (not on Hey, Not Too Rough or lower) at the bottom, and you can use the southwest corner as a lift. More medikits are to the south, and to the west you can press a switch to obtain rockets and a rocket launcher. (sector 163)

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 February 21, 2022.

Statistics

Map data

Things	375
Vertices	1340*
Linedefs	1322
Sidedefs	1760
Sectors	205

* The vertex count without the effect of node building is 1074.

Things

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

Single-player
Monsters	1-2	3	4-5
Zombieman	30	49	49
Shotgun guy	20	39	39
Imp	26	31	31
Demon	7	9	9
Spectre	19	31	31
Small drone	0	1	1
Weapons	1-2	3	4-5
Chainsaw	1
Shotgun	1
Chaingun	1
Rocket launcher	1
Ammunition	1-2	3	4-5
Clip	6
Box of bullets	5	8	8
4 shotgun shells	10
Box of shotgun shells	4	6	6
Rocket	6
Box of rockets	1
Health & Armor	1-2	3	4-5
Stimpack	20	40	40
Medikit	19	26	26
Items	1-2	3	4-5
Health bonus	32
Backpack	2
Berserk	2
Invulnerability	0	1	1
Radiation shielding suit	8
Superhealth	1
Keys	1-2	3	4-5
Blue keycard	1
Red keycard	1
Yellow keycard	1
Miscellaneous	1-2	3	4-5
Exploding barrel	5
Teleport landing	3