Quattro takes simple strategy and makes it towering fun! Make four cylindrical Quattro rings align - vertically, horizontally or diagonally before your opponent beats you to it. Both the forest and your love of logic will be growing with this sustainably sourced bamboo game! Greatly improves child's logic, reasoning, and concentration abilities and promotes good sportsmanship. Made from bamboo sourced from environmentally sustainably sourced forests. Hape toys stimulate children through every stage of development and help nurture and develop their natural abilities. All Hape products sold in North America meet or exceed all applicable safety standards. Quattro is the proud recipient of the 2012 Oppenheim Platinum Seal Award.