Title screen
Author John Romero
Port Limit-removing
Year 2019
Link Doomworld/idgames
Cacoward-2018.png This mod was a runner-up for the 2019 Cacowards on Doomworld!
This article is about the Doom episode. For the Strife weapon, see The Sigil of the One God.

SIGIL (also styled SI6IL) is an episode WAD for Doom and Ultimate Doom that was released in limited editions on May 22, 2019, while the free release appeared on May 31, 2019. It was announced on 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[1] 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.[2] The first version of the game allowing users to download SIGIL was released as an update on January 9, 2020.

A sequel, SIGIL II, was announced on August 15, 2021 and was released on Doom's 30th Anniversary, on December 10, 2023.[3]


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[1]

Limited editions[edit]

Along with the free WAD, two limited edition fan boxes by Limited Run Games were announced that were available for pre-order until December 24, 2018, and began shipping in May 2019.[4]

It became possible to receive SIGIL free with the purchase of the Buckethead soundtrack CD from the Romero Games website for €6.66 on May 25, 2019.[5]

Inspiration and development[edit]

Logo of SIGIL.

John Romero decided to create SIGIL in December 2017 after the positive reception garnered by his previous releases of Tech Gone Bad and Phobos Mission Control.[6]:3

The difficulty level of the episode aims to exceed the bar set by Episode 4. According to Romero, his design choice required each level be "really hard for [him] to finish". The name of the episode, based on the central artifact in its story, is a nod back to the title of Doom itself in being a simple single word.[6]:4

A conscious decision was also made to greatly play up the aspect of Satanic imagery. As part of this effort, John's wife Brenda Romero found existing artwork of Baphomet by Christopher Lovell, which John then obtained permission to use as the cover art. The logo for SIGIL was created by Romero Games lead artist Denman Rooke, and incorporates the Number of the Beast, 666, by stylizing the "G" in SIGIL.[6]:4

The high quality MP3 soundtrack available with boxed and electronically downloaded versions of SIGIL incorporates new and existing music by Buckethead, whose works Romero listened to while creating SIGIL's maps (in particular, each map's assigned track was used during that map's editing). The new track, "Romero One Mind Any Weapon," was composed by Buckethead specially for SIGIL after Romero made the request to license his music, as Buckethead is a long-term fan of the Doom series.[6]:5

SIGIL is intended to be widely compatible with a range of source ports. A second version of the WAD file named sigil_compat.wad has been provided which replaces episode 3 for those ports which cannot load episode 5 maps.[6]:5

On September 22, 2019, a version 1.2 update was released. Extensive change notes are included in the CHNGLG lump (see Doomworld forums post). A small version 1.21 fix followed on September 24 (see Doomworld forums post).


SIGIL Announcement


Built-in demos[edit]

This WAD features a full set of built-in demos. All four end with the player's death. All demos require Ultimate Doom v1.9 to view them. The demo levels are:

Demo Level Skill Tics Length
DEMO1 E5M2: Sheol 4 1767 0:50.49
DEMO2 E5M5: Abaddon's Void 4 2488 1:11.09
DEMO3 E5M7: Nightmare Underworld 4 2105 1:00.14
DEMO4 E5M1: Baphomet's Demesne 3 2093 0:59.80




Current records[edit]

The DSDA episode records for SIGIL are:

Run Time Player Date File Notes
UV max episode 34:56 Tatsuya Ito (Tatsurd-cacocaco) 2022-06-22
NM 100S episode 24:42 Jean-Charles Dorne (JCD) 2021-09-10
NoMo episode 07:28 Thomastd 2021-06-11

The data was last verified in its entirety on July 28, 2022.

External links[edit]


  1. 1.0 1.1 Romero Games (10 December 2018). "SIGIL Interview with John Romero." Romero Games. Retrieved 14 December 2018.
  2. Makedonski, Brett (11 December 2019). "Final Doom and Sigil being added to classic Doom console ports for free." Destructoid. Retrieved 13 January 2020.
  3. Romero, John (10 December 2023). "Free WAD for SIGIL II is up:" Twitter. Retrieved 10 December 2023.
  4. Romero, John (15 May 2019). "SIGIL Almost Ready." Retrieved 31 May 2019.
  5. Romero, John (25 May 2019). "SIGIL NEWS - Free SIGIL Megawad download available May 31. Premium SIGIL Megawad download with Buckethead soundtrack available NOW..." Twitter. Retrieved 29 May 2019.
  6. 6.0 6.1 6.2 6.3 6.4 Craddock, David (12 April 2019). "Icon of Sin: Doom and the Making of John Romero's Sigil." Shacknews. Retrieved 25 May 2019.