Hehe yeah it's not that intuitive :)

The links might not work for the games anymore, but here are some of them to try out:

http://qake.se/demo2

http://qake.se/demo

http://parrothunt.nergal.se/

http://nemo.nergal.se/

http://toad.webgl.nu/

http://vox2.webgl.nu/

All are created with ThreeJS and the source code is on Github.