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Sigil (also styled SI6IL) is an episode WAD for Doom and The Ultimate Doom that was released in limited editions on May 22, 2019, while the free release appeared on May 31, 2019. It was announced at Doom's 25th anniversary on December 10, 2018 by its designer, John Romero. Although billed as a megawad with 18 maps, Romero clarified in an interview that each of the nine single-player levels includes a separate deathmatch arena, making it a standard episode. The levels were created using Doom Builder 2.

SIGIL was named as a runner-up at the 2019 Cacowards, although in a break from tradition, its write-up was not contained to the sidebar, instead sharing a "Runner-up Spotlight" page with Doom 3: Phobos. On December 11, 2019, Bethesda announced support for Sigil as the first in a series of curated community WADs to be featured as an add-on for the Doom Classic Unity port, added alongside the official Final Doom and "No Rest for the Living". The first version of the game allowing users to download SIGIL was released as an update on January 9, 2020. A sequel, Sigil II (tentative title), was announced in August of 2021.


Sigil continues from the fourth episode, Thy Flesh Consumed, with the following story line:

"After killing the Spiderdemon at the end of E4M8 (Unto the Cruel), your next stop is Earth — you must save it from hellspawn that is causing unimaginable carnage. But Baphomet glitched the final teleporter with his hidden sigil whose eldritch power brings you to even darker shores of Hell. You fight through this stygian pocket of evil to confront the ultimate harbingers of Satan, then finally return to become Earth’s savior."

― John Romero



  • E5M1: Baphomet's Demesne
  • E5M2: Sheol
  • E5M3: Cages of the Damned
  • E5M4: Paths of Wretchedness
  • E5M5: Abaddon's Void
  • E5M6: Unspeakable Persecution (Exit to secret level)
  • E5M7: Nightmare Underworld
  • E5M8: Halls of Perdition (Spiderdemon and Cyberdemon are the bosses)
  • E5M9: Realm of Iblis (Secret level)

MIDI Soundtrack[]

  • E5M1: "Hate Machine"
  • E5M2: "You Ain't the Boss o' Me"
  • E5M3: "Quell the Beast"
  • E5M4: "Riot Squadron"
  • E5M5: "Alice"
  • E5M6: "Besieged City"
  • E5M7: "Watching You"
  • E5M8: "Easel"
  • E5M9: "Adrenaline in the Blood"
  • Title screen: "Lands of Ire"
  • Intermission screen: "Big Guns"

MP3 Soundtrack[]

  • E5M1: "Romero One Mind Any Weapon"
  • E5M2: "13th Floor"
  • E5M3: "Buildor 2"
  • E5M4: "The Patrolman"
  • E5M5: "Cold Frost part 6"
  • E5M6: "Melting Man part 2"
  • E5M7: "Far 5"
  • E5M8: "Poseidon 4-6"
  • E5M9: "Fastpass"
  • Title screen: "Eye on Spiral, Part 1"
  • Intermission screen: "Triceratoptron"