E2M12: Systems Crash (The Joy of Mapping 6)

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The Joy of Mapping 6 maps
Ep.1: Tech Gone Bad

M1 M2 M3 M4 M5 M6 M7 M8 M9 M10
M11 M12 M13 M14 M15 FINAL SCRT1 SCRT2

Ep.2: Anomaly Reborn
Ep.3: Doom Is Eternal

M1 M2 M3 M4 M5 M6 M7 M8 M9 M10
M11 M12 M13 M14 M15 M16 FINAL SCRT1

Ep.4: All That Remains

M1 M2 M3 M4 M5 M6 M7 M8 M9 M10

This level occupies the map slot E2M12. For other maps which occupy this slot, see Category:E2M12.
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E2M12: Systems Crash is the twelfth map in the Anomaly Reborn episode of The Joy of Mapping 6: Joy Eternal. It was designed by Liz Ryerson (ella guro) and uses the music track "Stone Tower Temple (Dark Remix)," arranged by Oath of Obscurity based on the original track from The Legend of Zelda: Majora's Mask composed by Koji Kondo. The par time defined in MAPINFO is 2:55.


Map of Systems Crash
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. At the steps south of the start, flip the switch to reveal the wall to the west. Go behind the switch and get on the thin wall as you head south, then west. Jump across to the west and head north and up to get a soul sphere. (sector 159)
  2. In the small town area, go to the northeast corner of the first building, then quickly run to the west building and onto its west side. Ride up to get armor bonuses and a green armor. (sector 37)
  3. At Secret #2, jump northeast to the next building and get the health bonus to open the door. Head out and jump to the block that has a chainsaw. (sector 65)
  4. Take the lift into the first building in the small town area. Ride this lift back up to the top and jump to the west wall. Lower it to get a backpack. (sector 46)
  5. In the small hall to the southwest, press the switch and head back east, then north to a portal. Turn around and open the door to get a BFG9000, a box of shotgun shells, and energy cells. (sector 167)
  6. In the room filled with crates, get to the ground floor at the east side to get a computer area map. (sector 396)
  7. After using the blue switch, take the steps behind it and get on the big platform. Jump to the southwest block to teleport to a megaarmor. (sector 211)
  8. At the southwest end, head to the blue torch to the west and step on its platform. Step onto the red triangle to the east and ride up, then head south to get an invulnerability. (sector 675)


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 27, 2023.


Map data[edit]

Things 581
Vertices 3011*
Linedefs 3045
Sidedefs 5146
Sectors 698
* The vertex count without the effect of node building is 2380.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]