ioq3.js is a simple port of ioquake3 to the web using Emscripten. It was heavily inspired by inolen's quakejs, but aims to be simpler and up-to-date with the latest Emscripten features.

You can play the demo version here.

make PLATFORM=js EMSCRIPTEN=/path/to/emscripten

Binaries will be placed in build/release-js-js.

Data is preloaded using Emscripten's virtual filesystem. So, if you want to play, you have the provide the official (or demo) PK3's. Here's how it would work for retail Q3:

python /path/to/emscripten/tools/file_packager.py emscripten_data.data --preload baseq3 > emscripten_data.js

And add this to the build/release-js-js/ioquake3.html file:

<script async type="text/javascript" src="emscripten_data.js"></script>

• Run python -m SimpleHTTPServer 8888 in build/release-js-js
• Load localhost:8888/ioquake3.html in your browser

• Networking
• Drop LEGACY_GL_EMULATION