E1M9: Central Processing (The Invasion)

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The Invasion maps
The Rock
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).


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.


Other points of interest[edit]


  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)


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
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.


Map data[edit]

Things 375
Vertices 1340*
Linedefs 1322
Sidedefs 1760
Sectors 205
* The vertex count without the effect of node building is 1074.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]