QuakeJS is a port of ioquake3 to JavaScript with the help of Emscripten.
This project started to demonstrate the feasibility of browser-based gaming, and what better way than with a classic game whose core gameplay revolves around the kind of responsive APIs that are available with HTML5 today.
If you'd like to read more about the development of the project, check out my blog. The project is available on GitHub.
Play a practice match against bots.
Note, the bot performance is pretty sluggish in CPMA in comparison to Vanilla Q3. If you'd like to try out a 5+ player match, stick with Vanilla Q3.
Join in on the action with others. The current servers are running the Challenge Pro Mode Arena and Quake 3 Fortress mods.