Hi!
That’s a game we made nearly 2 years ago now. It’s a bit out of date - perhaps we should update it! It would be great if you tried to make something similar.
I have another FPS environment that I was playing with recently:
http://apps.playcanvas.com/will/spacebase/spacebase
Again, I’m keen to develop this some more when I get a second. Too many projects, too little time! ;o)