When I took an AI class, the first thing they taught was Prolog and for exercises we all had to write adventure/colossal cave style games in it. Prolog turned out be well suited to the task. The variety of simple games made in the class was astounding and I wish I could have collected the all the games made by the other students. We only spent a couple of weeks before moving on to other topics, like CLIPS and Lisp. In my own assignment, I made a Bureaucratic Maze [1], again, fairly straightforward in Prolog.