From DoomWiki.org

ZDoom logo.png
KDiZD final boss.png

Advanced features on display in Knee-Deep in ZDoom.

Standard Doom, Boom, Heretic, Hexen, Strife, UDMF
Codebase ATB Doom, NTDOOM
Developer(s) Marisa Heit (Randi), Christoph Oelckers (Graf Zahl), Braden Obrzut (Blzut3)
Initial release 1.11 (1998-03-06, 26 years ago)
Latest release 2.8.1 (2016-02-22, 8 years ago)
Development status Discontinued
Written in C++
Target Platform Windows, Linux, Solaris, Mac OS X
Available in English (US), French, Italian
License Doom Source License, 3-point BSD, others
Website https://zdoom.org/
Source Repository



ZDoom is a discontinued advanced source port that was popular for many years because of its rich feature-set. It had Boom compatibility; complete support for Heretic, Hexen, Strife, and Chex Quest; as well as many additional new features, including slopes, uncapped framerate, and z-clipping. It was originally based on a merger of the ATB Doom and NTDOOM source ports.

The large number of editing features supported by ZDoom made it the port of choice for several independent game projects, notably Foreverhood, Action Doom 2: Urban Brawl, Chex Quest 3, and Harmony. ZDoom also served as a popular code base to build upon, with numerous other source ports derived from it or using portions of its code.

ZDoom was created by Marisa Heit (Randi) soon after the Doom engine source code was released in 1997, and by 1999 many foundational features had been added.[1] Others also made significant contributions over the years, including Christoph Oelckers (Graf Zahl) and Braden Obrzut (Blzut3).

Although Heit officially ceased the project in January 2017,[2] the ZDoom legacy continues to thrive in several forks, notably GZDoom and Zandronum.


List of supported games[edit]

Classic Doom-engine IWADs[edit]

  • Doom v1.2 or later, including Ultimate Doom
  • Doom II; development versions even support the modified IWAD included as a bonus with Doom 3: BFG Edition
  • Final Doom
  • Heretic
  • Hexen
  • Strife, including both demo versions
  • Chex Quest

Stand-alone mods[edit]

  • Action Doom II: Urban Brawl
  • The Adventures of Square
  • Chex Quest 3
  • Hacx v1.2 or v2.0
  • Harmony
  • Hedon
  • Rise of the Wool Ball

In addition, ZDoom offers aliases that allow use of free IWAD projects Freedoom and Blasphemer as alternatives instead of replacements. See list of supported games at the ZDoom wiki for further information.

Ports based on recent versions of ZDoom[edit]

These ports support most or all of the features listed above.

Ports based on older versions of ZDoom[edit]

These ports are not necessarily compatible with recent ZDoom mods.

External links[edit]


  1. WildWeasel (10 December 2017). "Marisa "Randi" Heit - Espi Award for Lifetime Achievement." Doomworld.
  2. Randi (7 January 2017). ZDoom is Dead. Long live ZDoom. ZDoom forums.
  3. Console. ZDoom Wiki.
  4. Sound format. ZDoom Wiki.
  5. Image format. ZDoom Wiki.
  6. GitHub comment block
  7. GitHub comment block


Source code genealogy
Based on Name Base for
ATB Doom ZDoom bZDoom
Heretic csDoom
Hexen GZDoom
Linux Doom 1.10 ManDoom
Strife Skulltag
ZDoomGL (v1)