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ioquake3 continues development of the Quake III Arena engine for supported platforms.
About Ioq3
ioquake3 is a community-maintained version of the Quake III Arena engine. It provides a baseline engine for further development and for playing Quake III Arena, Team Arena, and mods.
It supports SDL 2, OpenAL sound, VoIP, and builds for Linux, Windows, macOS, and Emscripten. Playing the original Arena or Team Arena games still requires a purchased copy of the game data, which is not included, and the map editor and compiling tools are not included.
Key features
- SDL 2 backend
- OpenAL sound support with multiple speaker output
- In-game VoIP and external support through Mumble
- AVI video capture of demos
- Web support via Emscripten
- Multiuser support on Windows with per-user game data
Best for: People who own Quake III Arena or Team Arena and want to play those games, run servers, or develop mods and standalone games on modern systems.
Good for
- Engine source code is freely available under GPLv2
- Works with Quake III Arena, Team Arena, and mods
- Provides build instructions for Linux, Windows, macOS, and Emscripten
Watch out for
- Playing Quake III Arena or Team Arena requires buying the game data separately
- Map editor and associated compiling tools are not included
Ioq3 at a glance
- Website
- github.com/ioquake/ioq3
- Category
- Gaming › Mods & Fan Projects
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Ioq3 FAQ
Do I need to buy Quake III to play it with ioquake3?
Yes. The engine source code is available under GPLv2, but the game data is not. You still need to buy a copy of Quake III Arena or Team Arena to play those games.
Does ioquake3 include the map editor?
No. The map editor and associated compiling tools are not included. The project suggests using a modern copy from icculus.org/gtkradiant.
Can I create my own mod or standalone game?
Yes. You can make a mod that requires the original game data, or a new game that does not.
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