cl-ggp is a tiny framework for writing general game players in Common
Lisp.
The cl-ggp system handles the GGP protocol for you and nothing else. If you
plan on doing your own GDL reasoning, this is all you need.
The cl-ggp.reasoner system contains a simple Prolog-based reasoner using the
Temperance logic programming library. It's useful as a starting point for
when writing players.