A highly addictive, fascinating game of visual perception. The object of the game is to identify three cards that form a set from 12 cards faced up. A set consists of three cards on which each feature is either the same on all of the cards, or different on all of the cards. The unique features about each card are: color, symbol, shading, and number. No turns required, just pick up on the action. 81 cards. Single player. Ages 6 to adult.