Game · Action & shooters

Crispy Doom

Limit-removing enhanced-resolution Doom source port.

Completely free
Linux
Open source

Overview

Gameplay elements described in its Flathub listing: mod support.

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

“Crispy Doom is a conservative, historically-accurate Doom source port, which is compatible with the thousands of mods and levels that were made before the Doom source code was released.” — Flathub, 10 November 2026

At a glance

All of Crispy Doom 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
Commercial use allowed

About

Crispy Doom is a conservative, historically-accurate Doom source port, which is compatible with the thousands of mods and levels that were made before the Doom source code was released. Unlike other source ports, the goal is to preserve the original look, feel, limitations, and bugs of the original DOS executable. Full support for single- and multi-player games is provided, for all of the original Doom games, Chex Quest, and Hacx. Unlike the original executable, network play is implemented on the IP network stack, allowing it to function on modern LANs and the Internet. The easiest way to run Crispy Doom is to copy a supported game file (known as a "WAD") to the root of your home directory and launch the application. If you have trouble with the automatic game file detection or need to manage multiple WAD files, you can run the application from the command line with a path to the selected game file: flatpak run io.github.fabiangreffrath.Doom -iwad ~/PATH/TO/GAME.WAD

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Flathub (credit card, 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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