Ludi is a piece of AI that takes as input the rules to classical abstract games and spits out dozens of new abstract games, many of which are, allegedly, as absorbing as the original games.

Sounds a little far-fetched, but the author of the program, which has just earned him a PhD from Queensland University of Technology, is Cameron Browne, author of a few excellent books on connection games such as Connection Games: Variations on a Theme and a definitive book on Hex Strategy.