Game · Adventure & point-and-click

Odamex

Fast, faithful Classic DOOM action — solo or online.

Completely free
Windows and Linux
Open source
No account

Ad-supported exit link (Clictune): an intermediate page may show for a few seconds before the official website. Direct link to the website, no intermediate page

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by Flathub, Winget (Windows Package Manager)
License: GPL-2.0+ — Open source (copyleft)confirmed by Flathub, Winget (Windows Package Manager)
Open source: Yes
Commercial use: Yesconfirmed by Flathub, Winget (Windows Package Manager)
Account required: Noconfirmed by Winget (Windows Package Manager)
Credit card required: Noconfirmed by Flathub, Winget (Windows Package Manager)
Watermark: Not applicable
Ads: not documented
Platforms: Windows and LinuxEstablished by Linux: Flathub · Windows: Winget
Publisher: The Odamex Team
Latest version: 12.3.0 (6 August 2026)
Latest activity: 5 October 2026
Source code: github.com/odamex/odamex

Overview

Gameplay elements described in its Flathub listing, in its GitHub repository and on its official website: mod support, co-op play and online multiplayer.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information

“It has the ability to play back vanilla demos, while also providing an enhanced experience with modern quality-of-life features and expanded modding capabilities.” — Flathub, 10 November 2026
“Cooperative & Survival” — Flathub, 10 November 2026
“ODAMEX - Online Multiplayer Doom” — official website, 10 November 2026

At a glance

All of Odamex is free: no feature is locked behind a paid plan, and its code is open.

Its licence (GPL-2.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
No account needed
Commercial use allowed

About

Odamex is a multiplayer-oriented DOOM port with a focus on classic DOOM gameplay. Perfect for playing with friends or alone, Odamex is faithful to the original DOOM games. It has the ability to play back vanilla demos, while also providing an enhanced experience with modern quality-of-life features and expanded modding capabilities. Features include: General Improvements on the Original Games: Can play many DOOM engine games, including Ultimate DOOM, DOOM II, Final DOOM, Freedoom, Chex Quest, Hacx, and REKKR Supports many modern editing features, such as “limit removing”, Boom, MBF, MBF21, and ID24 Supports Hexen format and older ZDoom format maps Uncapped framerate High resolutions Widescreen support up to 32:9 ratio (ultra widescreen) 32-bit color renderer Multiple ways to playback MIDI music, including an FM Synth emulator to rekindle those 1990s memories Supports MOD and other tracker music, MP3, and OGG in custom wads Quake-style console and key bindings Crosshairs Extended HUD Mouselook, jumping, swimming, and flying Walk over/under monsters and other things Unmatched Online Experience: Support for up to 255 players at once Top tier network code. Play with your friends on the other side of the world! Unlagged - Odamex will compensate for poor network conditions In-game wad downloading On-the-fly wad loading (servers can run hundreds of wads without you disconnecting!) Vote to change server settings such as fraglimit, timelimit, map, and more (must be enabled on server) Custom player colors Exciting Multiplayer Gamemodes: Cooperative & Survival Deathmatch / Team Deathmatch Last Man Standing / Team Last Man Standing Capture the Flag The Cacoward winning Horde mode And more! To use your own Timidity config file, use this command: flatpak override net.odamex.Odamex --env=TIMIDITY_CFG=<config location> Note: The included version of Timidity does NOT support soundfonts, only GUS patches. A copy of DOOM, DOOM II, Final DOOM, Freedoom, Hacx, REKKR, or Chex Quest is required. If you do not own DOOM, it can be purchased on GOG or Steam.

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 9 November 2026
Facts collected from Winget (Windows Package Manager) (credit card, account, source code, publisher, licence, free status, platforms, commercial use, version) — 8 November 2026
Last technical check: 7 November 2026
Description from Flathub — AppStream (Flathub)

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