Case study

openQ4: replacing the Quake 4 engine and game binaries

openQ4 replaces the Quake 4 engine and game binaries with a GPL engine and SDK-licensed game modules that use the player's retail game assets. The source adds modern display, audio and controller support, with experimental multiplayer and Vulkan rendering.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C1 partial scope or analysis entry

Stars: 182
Last commit: 2026-11-09
Language: C++
License (GitHub): GPL-3.0

GitHub data as of 2026-11-10

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Evidence

Demo screenshot from the project's public documentation

Observed: Download and demo observed; the case covers part of the target software.
Scope: Partial
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: A legitimate Quake 4 installation and its retail assets are required.
Prerequisites: A matching 64-bit platform package and OpenGL-compatible graphics driver are required.
Limits: The project is in beta; Vulkan and multiplayer are experimental.
License: The engine LICENSE file is GPL-3.0; game modules have separate SDK terms.

Cite

BibTeX

@misc{openq4-quake-4-case,
  title = {{openQ4: replacing the Quake 4 engine and game binaries}},
  howpublished = {\url{https://github.com/themuffinator/openQ4}},
  url = {https://github.com/themuffinator/openQ4},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/openq4-quake-4-case/}}
}

Plain text

openQ4: replacing the Quake 4 engine and game binaries. https://github.com/themuffinator/openQ4 (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/openq4-quake-4-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

README.md GitHub · themuffinator/openQ4 · Revision 8250fb4
docs/user/getting-started.md GitHub · themuffinator/openQ4 · Revision 8250fb4