globeloop is the thing to run; it expects the
executable obtainable from globeangle.c to
be available as games/globeangle .

I think globeangle.c was posted on 9fans or available
via a website as globe.c (I forgot who wrote it),
see:
http://groups.google.com/group/comp.os.plan9/msg/0f6682b4b091b643?dmode=source


it is from early oct 2004, globeloop was inspired
by some discussion on 9fans at the time, I think.