Timeline

Below is a timeline of Doom-related events.

Before 1993

 * October 28, 1967 - John Romero is born.
 * August 20, 1970 - John Carmack is born.
 * December 14, 1990 - The first episode of Commander Keen (Marooned on Mars) is released.
 * February 1, 1991 - id Software is officially formed.
 * May 5, 1992 - Wolfenstein 3D is released.

1993

 * February - Doom 0.2 alpha released privately.
 * March - A Doom alpha never released to testers.
 * April 2 - Doom 0.4 alpha released privately.
 * May 22 - Doom 0.5 alpha released privately.
 * October - Doom Pre-Beta demo released.
 * December 10 - Doom 0.99 (aka 1.0) shareware is released.

1994

 * January 26 - The first version of the Doom Editing Utilities is released.
 * March 7 - The first public third-party PWAD is released.
 * October 10 - Doom II is released.
 * December 23 - Heretic is released.

1995

 * April 30 - Ultimate Doom is released.
 * October 30 - Hexen is released.
 * December 26 - The Master Levels for Doom II is released.

1996

 * May 31 - Final Doom, Strife and the first version of Quake are released.
 * Chex Quest is released in boxes of Chex cereal.
 * Hexen: Deathkings of the Dark Citadel is released.

1997

 * Fall - The Depths of Doom Trilogy combination pack is released.
 * December 23 - The Doom source code is released.

1998

 * March 13 - The popular Doom news site Doomworld is founded.

1999

 * January 11 - Raven Software releases the source code for Heretic and Hexen.
 * April 20 - The Columbine High School Massacre occurs.
 * October 3 - The source code for Doom is re-released under the General Public Licence (GPL) by John Carmack, thanks to persuasion by Andrew "Linguica" Stine.

2000

 * June 2 - New Doom is founded.

2001

 * September - The Ultimate Doom Trilogy: Collector's Edition combination pack is released, incudes all four official Doom IWADs and Doom95.

2003

 * January 29 - The Ultimate Doom Trilogy: Collector's Edition combination pack is re-released with Doom 3 promotion material.
 * May 6 - Masters of Doom, by David Kushner, is published.

2004

 * August 3 - Doom 3 is made available in the US.

2005

 * January 5 - The Doom Wiki begins.
 * April 4 - Doom 3: Resurrection of Evil is released.
 * September 13 - Doom RPG is released.
 * October 18 - Quake 4 is released.
 * October 21 - Doom movie premieres in the US.

2006

 * February 7 - Doom movie DVD is released.
 * July 11 - Prey is released in the US.
 * September 27 - Ultimate Doom is released on the Xbox 360 Live Arcade worldwide.

2007

 * August 03 - Every Doom game is released on Steam, along with various Doom and Doom 3 engine games.
 * September 28 - Enemy Territory: Quake Wars is released.