Age 7+. 1 special pen & 48 pages. The special pen does it all! Read silly stories, find hidden objects, and solve riddle codes! Fill in the silly stories using the special pen and solve the Hidden Pictures puzzles! www.leemagicpen.com. From the makers of Yes & Know game books. Facebook: www.facebook.com/magicpens. Conforms to ASTM D4236 - non-toxic. Printed in USA.