About ZDoom

ZDoom is a family of enhanced port of the Doom engine to modern operating systems. It runs on Windows, Linux, and OS X, and adds new features not found in the games as originally published by id Software.

Older ZDoom ports may be used and distributed free of charge. No profit may be made from the sale of it. GZDoom and its descendants from version 3.0.0 on are licensed GPL and are subject to the terms and restrictions of the new license.

ZDoom was originally created by Randi Heit using id Software's and various others' sources. Its successor ports GZDoom and QZDoom are now maintained by Christoph Oelckers, Braden Obrzut, Rachael Alexanderson, and Magnus Norddahl.

Why would I want to use ZDoom instead of regular Doom?

Consider all these features that ZDoom has that are not found in the standard Doom originally released by id:

  • It runs well under all modern versions of Windows, from Windows XP to the new Windows 10. If you have Mac or Linux, it works with that too.
  • Can play all Doom engine games, including Ultimate Doom, Doom II, Heretic, Hexen, Strife, and more.
  • Supports all the editing features of Hexen. (ACS, hubs, new map format, etc.)
  • Supports most of the Boom editing features.
  • Many more all-new editing features such as:
    • Colored lighting.
    • 3D floors.
    • Portals.
    • Advanced polyobjects free from the restrictions of their original implementation in Hexen.
    • Custom monsters, weapons, items, player classes, and other entities.
    • High resolution textures and sprites.
    • Translucency (regular and additive).
    • Many, many extensions to ACS that were not present in Hexen.
    • More music formats: Ogg Vorbis, MOD, XM, IT, S3M, MIDI, and MP3 as well as old-fashioned MUS all work.
    • More sound formats: FLAC and WAVE can both be used for sound effects.
    • More texture formats: PNG and JPEG are both useable for artwork.
  • All Doom limits are gone.
  • Several softsynths for MUS and MIDI playback, including an OPL softsynth for an authentic "oldschool" flavor.
  • High resolutions.
  • Quake-style console and key bindings.
  • Crosshairs.
  • Free look (look up/down).
  • Jumping, crouching, swimming, and flying.
  • Full-featured joystick/gamepad support under Windows.
  • Up to 8 player network games using UDP/IP, including team-based gameplay.
  • Support for the Bloodbath announcer from the classic Monolith game Blood.
  • Walk over/under monsters and other things.

With thanks to...

id Software / John Carmack
These are the people who developed Doom and later released the source code for the Linux port. Without them, there would be no ZDoom. Some of the functions from their Quake2 game DLL source were also used.
Bernd Kreimeier
Packaged up id's Linux code for the initial source release.
Raven Software
Portions of Heretic and Hexen were used in ZDoom.
Marisa "Randi" Heit
For creating ZDoom and maintaining it for nineteen years.
Christoph Oelckers
Most of the DECORATE support as well as numerous bug fixes. Also, for the OpenGL renderer, as well as advancing ZScript along to the point where it is today.
Chi Hoang / Team TNT
Responsible in one way or another for Boom, which provided a significant codebase for ZDoom. Information about Boom can be found on the Doom Wiki at DoomWiki.org.
Lee Killough
For all his brilliant work on both Boom and later MBF. Portions of MBF were used in ZDoom, primarily to fix Boom bugs.
Xaser Acheron
Development and support of the new website.
Rachael Alexanderson
Creator of the QZDoom source port which merged in Norddahl's True-color software renderer in with GZDoom. Keeps ZDoom.org afloat and helped spearhead the recent site upgrades.
Sebastien Bacquet
Created qmus2mid which was used to determine the structure of DOOM's MUS lumps so that the game would have music.
Benjamin Berkels
Major contributions to GZDoom's model code, and also helped integrate the texture resampling code. Also the lead developer of Zandronum (and formerly, Skulltag), from which some code has been used.
Brad Carney
Creator of the Skulltag source port, whose code has also been used in many places throughout ZDoom.
Martin Collberg
Creator of the Cajun Bot.
Daniel "Tormentor667" Gimmer
Graphic design and initial mockup of the new website.
James Haley
Creator of the Eternity Engine source port, helped design the specifications for the Universal Doom Map Format and allowed the use of some parts of his advanced polyobject code to be used in ZDoom.
Simon Howard
Creator of the SMMU and Chocolate Doom source ports, allowed code from both of them to be used in ZDoom.
Greg Lewis
Released his DeHackEd source, without which adding DeHackEd support would have been much harder.
Alexey Lysiuk
Creator of the original GZDoom-Mac project, which was later ported over and merged into to GZDoom proper. He has been instrumental on assisting with fixing a lot of GZDoom bugs, particularly with non-Windows platforms, and also for the wtfi.exe utility which allows GZDoom to run properly with the broken drivers on older Intels on Windows 10.
Magnus Norddahl
Creator of QZDoom's true-color software renderer, as well as adding in post-processing and flexible window scaling support to both ZDoom and GZDoom.
Chris Robinson
Maintainer of OpenAL-Soft, and developer and maintainer of ZDoom's OpenAL backend support. He is a big part of the reason why GZDoom was able to transition away from FMod and go fully GPL compliant, today.
Ken Silverman
Creator of the "Build" Engine, and for giving special permission to relicense his voxel code as GPL for GZDoom's software renderer.