In this cooperative game, players try to develop a series of balanced patterns. The moving principles are simple, but the variations and complexities of play are almost infinite. This is a game for those who like abstract, meditative endeavors. A simpler game, Clarity, is included for the beginner or younger players. The game also includes a 12" x 12" board, three sets of colored "pebbles," and scoring sheets. Launch date: 1973.