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This article is about John Romero's megawad. The Strife superweapon is The Sigil of the One God.


Sigil (stylized as SI6IL or Si6il[1] with the G formed of three sixes) is a WAD for Doom by John Romero, released on June 1st, 2019. It requires players own a registered copy of Doom in order to play.


As stated in the Add-ons for Bethesda's ports of Doom: Sigil was designed by Romero Games: SIGIL was designed by id co-founder and lead designer of DOOM and DOOM II, John Romero to celebrate DOOM's 25th anniversary. Created as an unnoficial sequel to Ultimate DOOM, SIGIL follows DOOM's fourth episode, Thy Flesh Consumed, and is designed to be even more difficult - with a heavy emphasis on Satanic imagery.


Gameplay screenshot

Sigil is a free megawad for the original 1993 DOOM® created by John Romero. It contains nine single-player and nine deathmatch levels.


Sigil takes place after E4M8 and before Doom II. After killing the Spiderdemon, Doomguy steps into a teleporter. However, Baphomet glitched the teleporter with his hidden sigil, which brings Doomguy to dark shores of Hell. The Doomguy has to fight through this stygian pocket of evil to confront the ultimate harbingers of Satan, then finally return to become Earth's savior.[2]

Baphomet was only doing Satan's bidding by bringing you back to Hell. Somehow they didn't understand that you're the reason they failed in the first place.
After mopping up the place with your arsenal, you're ready to face the more advanced demons that were sent to Earth.
Lock and load. Rip and tear.


  • 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)

Special Editions

The boxed edition

In addition to the free megawad, SIGIL was also released in two limited edition fan boxes created by Limited Run Games. The fan boxes feature music by Buckethead, including a custom song written expressly for SIGIL, and cover art by Christopher Lovell. Pre-orders were open only from December 10 to December 24, 2018.

Standard Edition

  • A demonic standard-sized "big box" featuring the artwork of Christopher Lovell.
  • A 16GB 3 1/2-inch floppy disk themed USB stick that includes the free megawad data and extras.
  • A 2-disc jewel case that includes the free megawad data and soundtrack by Buckethead.
  • 2 stickers: 1 SIGIL and 1 Romero Games.

Beast Box

  • A demonic over-sized box, inspired by the id Anthology™ box, individually numbered and signed personally by John Romero and featuring the artwork of Christopher Lovell.
  • A 16GB 3-1/2-inch floppy disk-themed USB that includes the free megawad data and extras.
  • A 2-disc booklet styled case that includes the free megawad data and full soundtrack by Buckethead and behind-the-scenes information on the original game and the megawad's development.
  • A beautiful 8" x 10" art print signed by the illustrator, Christopher Lovell.
  • A SIGIL-themed coin.
  • A pewter statue of John Romero's head on a spike.
  • An XL-sized SIGIL T-shirt.
  • 2 stickers: 1 SIGIL and 1 Romero Games.


Romero created the WAD for the 25th anniversary of Doom. Work began in 2016, with Romero working on it part-time through 2017-'18. It was constructed using Doom Builder 2 by Pascal vd Heide. The game is designed to be a "true fifth episode" of the original Doom however the mod is presumably non canonical. Betheda's slayers club calls it an 'unofficial sequel' and 'revisionist history' to the series canon. Bethedsa has since released it and other unofficial add-ons with their PC and console ports.[3][4]


Revising the history for ending of Doom + Thy Flesh Consumed from being Earth, to being a limbo/purgatory universe would beg the question on how Daisy got there. Granted if one simply ignores 'Daisy', where the story just has him traveling between various hell dimensions between Inferno, Thy Flesh Consumed, and finally SIGIL, it simplifies things (ignoring one of the sillier aspects of the original Doom story). However, a certificate made and signed by Romero states that Daisy was killed by a Demon Guillotine, and sent to the Stygian Abyss, during Episode 3: Inferno. Stygian Abyss is apparently the location where Episode 4 takes place.

These official add-ons are PWADs that can be downloaded from to be played with the Doom Classic Unity port. Since console manufacturers do not usually allow players to use third-party content unless vetted by the publisher of the game, the official add-ons system allows a selection of modifications to be downloaded and played instead of being limited to the IWADs. Official add-ons are curated to ensure they are playable within the raised limits of Doom Classic, and to avoid potential copyright infringement in their content. Also, the consent of all original authors is mandatory, according to a Doomworld forums post by id Software member Mike Rubits (sponge), so that they all have to be contactable by id Software in order to license their work.

Note that "official" in this context refers to provision of the content by id Software. There has been no statement indicating that the modifications created by the community should be considered canonical story-wise.


  2. After killing the Spider Mastermind at the end of E4M8 (Unto the Cruel), your next tour of duty is eliminating the hellspawn that is causing unimaginable carnage in Earth’s cities. But Baphomet glitched the final teleporter with his hidden sigil whose eldritch power brings you back 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. In summary, rip and tear!

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