Zandronum logo.png
Codebase Skulltag
Developer(s) Torr Samaho
Initial release 1.0-alpha-120602-1356 (2012-06-03, 2 years ago)
Latest release 1.2 (2013-09-01, 12 months ago)
Development status Active
Written in C++
Target Platform Windows, Linux, Mac OS X
License Modified Sleepycat License
Source Repository


Zandronum is a source port focused on offering a modernized multiplayer experience, offering new game modes such as capture the flag, invasion or domination. The International Doom League adopted it as its port of choice in 2014.


Zandronum was forked from its parent project Skulltag on June 3, 2012, continuing the development of the latest Skulltag 98e. Since Brad Carney (Carnevil) requested the name Skulltag not to be used by a project over which he had no control, the community was asked to find a new name. Two of the most popular choices were Andromeda and Infernum, which emphasized respectively Doom's sci-fi and occult elements; other people wanted the port's name to begin with a 'Z' to reflect the port's ZDoom affiliation. In the absence of clear consensus, these were combined into a portmanteau.

Zandronum's version numbering scheme uses two or three values. The major value increases with updates of the underlying ZDoom codebase, while the minor value increase for releases which do not change the base ZDoom compatibility level. For instance, Zandronum 1.x is based on ZDoom 2.3.1, while Zandronum 2.x is based on ZDoom 2.5.0. For pure bugfix releases, a third number can be used: Zandronum 1.2.2 has the same feature set as Zandronum 1.2, but fewer bugs.


Team members[edit]

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Source code genealogy
Based on
Zandronum Active