ODAMEX - Online Multiplayer Doom^™

Odamex is a free, cross-platform (Mac, Windows, Linux) modification of the Doom engine that allows players to easily join servers dedicated to playing Doom online.

A copy of Doom, Doom II, Freedoom or Chex Quest is recommended to play it. If you do not own Doom, it can be purchased on GOG or Steam.

Download Now

Get On Board The Discord

Chat with friends, join a game, enter a tournament, get help, follow development and more on our Discord channel. It's the best way to stay directly connected to all things Odamex.

Enter Discord Server

Developers Wanted

Know C or C++? Have a desire to work on a multiplayer game engine? The Odamex Development Group is looking for developers with a little or a lot of time and interest in helping advance this open source multiplayer doom source port. Get our code on GitHub, and check out our bug tracker for where we need help the most.

Help The Effort - Expand Our Wiki

Every little bit helps. We need smart, capable folks to improve our wiki. Sign up via the boards and do your part!

Odamex Wiki Sign Up

Find more Odamex players:

Download Now for Your Platform

Each stable package includes client, server, and launcher applications.

Version 11.1.0:

News & Announcements

Odamex 11.1.0 Released

Hekksy :: August 10, 2025, 02:56:40

Odamex 11.1.0
Odamex 11.1.0 has been released! The 11.1.0 client can run on 11.0.0 servers, just in case the server hosts are a bit behind.

Some features that may stick out are:

THE FLATPAK BUILD IS...

0 comments

Odamex 11.0.0 Released

Hekksy :: February 28, 2025, 19:18:07

Odamex 11.0.0
The next major version of Odamex is here! Included are a myriad of quality-of-life improvements and bug fixes, as well as some long-requested features!

Some features that may stick out...

0 comments

View more...

Latest Updates

Changelog

Rev	Comment
f43025c	Merge pull request #1340 from electricbrass/feature/tx-namespace [FEATURE] `TX_...
f1b13d7	Finish up TX namespace support. Textures defined in it now override those in TEX...
71c2ed2	Initial go on supporting TX_START/TX_END For full support, textures defined in ...
db2e94b	Merge pull request #1336 from electricbrass/bugfix/netrecord [BUGFIX] Netdemos ...

Issue Tracker

Id	Description
1341	Search for wads in GOG installs on Windows
1334	Multiple UMAPINFO episode fixes
1328	[BUG] DeHackEd Pointer blocks parsing inconsistencies
1324	[BUG] Screen border partially not drawn if starting singleplayer game from spect...

Doom, Doom II & More

ODAMEX is compatible with the following games:

Open Source, Any Platform^*

ODAMEX is designed with portability in mind. From PCs to netbooks, consoles to handhelds, Amiga to Windows - our goal is for any device to run multiplayer Doom.

If you have ported ODAMEX to a new device or platform, let us know!

ODAMEX - Online Multiplayer Doom™