Contribution of Josh Sand
I have been digging around in /usr/share/emacs/22.1/etc/ recently, and I have found it is chock full of goodies, and possibly worth of an article on UsingMac.
Files I have found (put line in Terminal):
Unlike what people think of and write of, Terminal game isn't the correct term to be used; Instead, emacs game is the correct term.
Emacs version 22.1 first supports Mac OS X on June 2, 2007. The complete story of emacs can be read from wikipedia: GNU Emacs, if you're interested.