; Emacs Lisp

I have been playing around with the lisp integrated into emacs, rather than one that you bring up with slime and run alongside emacs.  Of course the first big difference is that so much is tied to how you call the function, pass it variables, and what it does.  Many if not all of the games are written in emacs lisp and you can go to help, read about them, and then pull up their lisp source.