And here's ioquake3 (id tech 3-based), http://www.quakejs.com/ http://www.quakejs.com/ and (free-)doom (free, due to copyright), http://kripken.github.io/boo

And here's ioquake3 (id tech 3-based), http://www.quakejs.com/ http://www.quakejs.com/ and (free-)doom (free, due to copyright), http://kripken.github.io/boon/boon.html http://kripken.github.io/boon/boon.html