Tech Gone Bad


This level occupies the map slot E1M8. For other maps which occupy this slot, see Category:E1M8.

Tech Gone Bad is a single Doom level for limit-removing ports created in 2016 by John Romero as a warm-up exercise before working on a new FPS game, Blackroom. It is an alternate take on E1M8: Phobos Anomaly.

It was named as a winner of one of the 23rd Annual Cacowards

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Map of Tech Gone Bad
Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count toward the end-of-level tally.


Other points of interest[edit]


  1. (sector 19)
  2. (sector 167)
  3. (sector 332)
  4. (sector 349)
  5. (sector 367)
  6. (sector 371)
  7. (sector 546)
  8. (sector 547)
  9. (sector 557)
  10. (sector 560)


One imp (Thing 16) has no flags set for any of the three difficulty classes, so it does not actually appear in the level.

Demo files[edit]

Areas / screenshots[edit]

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Routes and tricks[edit]

Current records[edit]

The records for the map on the Doomed Speed Demos Archive are:

Style Time Player Date File Notes
UV speed
NM speed
UV max
UV -fast
UV -respawn
UV Tyson
UV pacifist

Miscellaneous demos[edit]

Style Time Player Date File Notes



Map data[edit]

Things 569
Vertices 4572*
Linedefs 4011
Sidedefs 6710
Sectors 601
* The vertex count without the effect of node building is 3340.


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

Technical information[edit]

Inspiration and development[edit]


  • This is the first map John Romero created with a third-party editor (Doom Builder 2) rather than his own DoomEd.
  • On September 30, 2016, John Romero released a walkthrough video of him playing through the level and commenting on its design.


External links[edit]