Clash of the Princes were two books, released as a boxed set in 1986, that could be played as standard Fighting Fantasy gamebooks or could be combined for a two-player experience. In the two-player game, two scores (action and status) are kept track of on a piece of paper in order to keep both players' game experiences synchronized. They were the first Fighting Fantasy books to drop out of print as retailers at the time were not fans of boxed sets.