2-8 players 20 minutes Age 10+ The object of the game is to identify "sets" of three cards. Each card is unique in its four features: number (1, 2, or 3); symbol (diamond, squiggle, or oval); shading (solid, striped, or open); and color (red, green, or purple). A "set" consists of three cards on which every feature is either the same on all of the cards, or different on all of the cards. CG says: Fantastic for developing pattern recognition but also pattern differentiation and pattern formation as you have many ways to collect a "Set".