Timeline of mod releases

This is a timeline of Doom modification releases and directly related events. For the primary Doom timeline, see the Timeline article. For source port releases, see the timeline of source port releases.

1994

 * January 26 - The first version of the Doom Editing Utilities is released.
 * March 7 - The first public third-party PWAD, the Origwad, is released.
 * March 11 - CROSS.WAD is released.
 * March 24 - E2M1ED.WAD is announced on Usenet.
 * June 10 - Crossing Acheron is released in version 0.0.
 * June 23 - Doomsday of UAC is released.
 * June 28 - Slaughter Until Death, the first WAD created by The Innocent Crew, is released.
 * August 10 - Return to Phobos is released.
 * August 22 - The Unholy Trinity is released.
 * October 1 - The Evil Unleashed is released
 * October 19 - Aliens TC is released, becoming the first total conversion.
 * October 30 - Version v2.0 of the first installment of Serenity Trilogy, Serenity, is released.
 * November 7 - Version v1.1 of Eternity is released.

1995

 * January - The Lost Episodes of Doom is published.
 * May 11 - Infinity, the final part of Serenity Trilogy, is released.
 * May 14 - The Innocent Crew releases the final version (1.1) of Obituary.
 * May 17 - The Final Gathering is released.
 * June 9 - A deathmatch-focused WAD called Boothill is released. Later that year, A Fistful of Doom, the UK answer for the previously mentioned WAD, is released.
 * June 13 - The Artifact (WAD) is released in its first, full state.
 * August 29 - Fava Beans is released.
 * September - The Abyss is released.
 * October 28 - TNT: Evilution is announced delayed in favor of a commercial release as one half of Final Doom.
 * November 13 - Nostromo's Run is released after a year of development.
 * December 10 - Memento Mori is initially released.
 * December 18 - H2H-Xmas is released.

1996

 * January 24 - Polygon Base is released.
 * February 10 - Memento Mori is initially uploaded to the /idgames archive.
 * March 21 - Icarus: Alien Vanguard is uploaded to the /idgames archive.
 * March 29 - The Troopers' Playground is released. One of the WAD's levels occupying MAP06 slot will become part of Requiem in the future in MAP09 slot.
 * April 12 - 99 Ways to Die is released.
 * April 17 - A Hidden Mountain Factory is released.
 * May 14 - Dystopia 3 is released.
 * July 17 - All Hell is Breaking Loose is released.
 * July 27 - Memento Mori II is uploaded to the /idgames archive.
 * August 1 - Army of Darkness TC is released, both for Doom and Doom II.

1997

 * February 22 - The first episode of Mordeth called "The City of Babel" is uploaded to the /idgames archive. From that point on, there is no particular information about the rest of the WAD's release.
 * May 2 - Hell Revealed is uploaded to the /idgames archive.
 * May 11 - Chord NG, the third installment of the Chord series is uploaded to the /idgames archive.
 * June 15 - Dawn of the Dead, an episode replacement for Knee-Deep in the Dead is uploaded to the /idgames archive.
 * June 19 - The Talosian Incident is released.
 * June 24 - STRAIN, a partial conversion for Doom II is uploaded to the /idgames archive.
 * July 4 - Requiem is uploaded to the /idgames archive.
 * July 12 - GothicDM, a deathmatch exclusive WAD, is released.
 * August 2 - Hell's Eventide is uploaded to the /idgames archive.
 * November 14 - Eternal Doom is uploaded to the /idgames archive.

1999

 * January 30 - Wow.wad is uploaded to the /idgames archive.
 * May 21 - Assault on Tei Tenga is released.

2001

 * November 14 - Nuts.wad is uploaded to the /idgames archive.

2002

 * December 26 - Alien Vendetta is uploaded to the /idgames archive.

2003

 * July 1 - Initial release of the Doom 64 TC.
 * December 10 - TeamTNT releases its first ZDoom-targeted mod, Daedalus: Alien Defense.

2004

 * May 28 - Deus Vult is released.

2007

 * June 2 - Initial release of Knee-Deep in ZDoom.
 * July 16 - Demons of Problematique is released and is later named a Cacowards runner-up.

2008

 * August 24 - UAC Military Nightmare is uploaded to the /idgames archive.

2009

 * September 20 - Demons of Problematique 2 is released and later wins a Cacoward.
 * October 22 - Deus Vult Zero is released.

2010

 * February 28 -  level designer Jean-Paul LeBreton publishes a noted design analysis on Doom and releases Arcadia Demade, a Doom II version of a BioShock level.
 * March 28 - UAC Ultra is released.
 * September 4 - The Brutal Doom gameplay mod is initially released.
 * October 8 - Mega Man 8-Bit Deathmatch is released to the public after a demo debut at the ScrewAttack Gaming Convention.
 * October 9 - Hacx v1.2 is released as a stand-alone IWAD.

2015

 * February 14 - The first version of InstaDoom is released. It wins the Mockaward for 2015.
 * June 13 - Sunlust is released and later wins a Cacoward.
 * August 17 - Don't Be A Bitch Remastered is released and later wins a Cacoward.

2016

 * January 15 - John Romero releases his first Doom PWAD in 21 years. Tech Gone Bad is a single level for limit-removing ports and is an alternate take on.
 * April 26 - John Romero releases a second Doom PWAD, Phobos Mission Control, as an alternate take on.

2019

 * May 22 - John Romero's SIGIL is released in the form of limited editions, which began to ship on this date. On May 31, the WAD was released as a free download.