Ages 8 to 80, 40 challenges from tutorial to practically impossible. PUZZLE of the YEAR!! Games Magazine Cool Circuits™ really does live up to its name. COOL! Lay down a puzzle card, solve the challenge by making a loop, and watch the board light up! Cool Circuits™ has 40 different challenges ranging from student to expert. Can you solve them all? Comes with light up board, 8 fluorescent, 3D puzzle pieces and 40 challenge cards. This puzzle emphasizes spatial reasoning and abstract thinking. Ages 8 and up.