E1M8: Launch Bay (Double Impact)

From DoomWiki.org

Double Impact maps
This level occupies the map slot E1M8. For other maps which occupy this slot, see Category:E1M8.
Under construction icon-yellow.svgThis article about a map is a stub. Please help the Doom Wiki by adding to it.

E1M8: Launch Bay is the eighth and final map of Double Impact. It was designed by Matt Cibulas (RottKing) and Ralph Vickers (Ralphis), and uses the music track "". The par time defined in the DMAPINFO lump of the edition released as official add-on is 5:15.


Map of Launch Bay
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 watery area northeast of the main arena, you will find a switch which opens the wall behind you as well as lowers the switch itself. There is also a switch on the backside of this particular switch, which you can still press even if you lowered the switch. The backside switch opens up two compartments, one with a medikit and another with a box of rockets. Both count as one secret. (sector 56)
  2. In the main arena, go to the northeast corner and drop into the nukage pit at the southern end of this corner (not the other nukage pit, there is no way to escape from that one). Press on the poison sign here to open the way to a lift, which takes you up to a plasma gun. (sector 207)
  3. At the teleporter north of the starting point, you can open the wall with slime on it for a health bonus. (sector 312)
  4. Open the next wall in Secret #3 for an armor bonus. (sector 316)
  5. Open the next wall in Secret #4, which is to the north, and you will see a dead zombieman. (sector 318)
  6. Open the next wall in Secret #5, which is to the east, and an imp will attack you. (sector 320)


  • The progression of this map basically relies on activating four switches to access the southern area, whilst dodging three or four relentless cyberdemons. Each one of these switches will actually enable a crusher ceiling to kill a helpless and defenseless baron of Hell placed outside the playable area (there are no barons inside the playable area). Shortly after the last switch is pressed (they can be pressed in any order), the last baron of Hell will be killed and the tag 666 will be executed in order to lower the walls of the southern area.
Unfortunately, there is a small chance that pressing all four switches does nothing at all, resulting in a softlock. The version offered as an official add-on is not affected by this potential bug, since it does not rely on crushing barons of Hell to execute the tag 666.

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 2:35.97 Memfis 2011-04-01 d1i8p235.zip Cross-listed from Pacifist
NM speed
UV max 5:35.17 Boris Klimeš (dew) 2011-04-21 d1i8-535.zip
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist 2:35.97 Memfis 2011-04-01 d1i8p235.zip

The data was last verified in its entirety on December 9, 2021.


Player spawns[edit]

This level contains twelve spawn points:

  1. facing north-west. (thing 377)
  2. facing south. (thing 385)
  3. facing south. (thing 386)
  4. facing east. (thing 387)
  5. facing north-east. (thing 388)
  6. facing south. (thing 389)
  7. facing south-west. (thing 390)
  8. facing west. (thing 391)
  9. facing north. (thing 392)
  10. facing east. (thing 393)
  11. facing north. (thing 394)
  12. facing south. (thing 395)


Map data[edit]

Things 399
Vertices 1832*
Linedefs 2019
Sidedefs 2766
Sectors 328
* The vertex count without the effect of node building is 1613.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]