6 years & up. First kids build any of the 10 sports and arcade games, then "let the games begin!" Then take apart, build and play another, over and over again. Includes: 150 "classic" ZOOB pieces, 2 hi-bounce balls, other accessories, and instructions to build 10 activities. Also includes instructions to build over 30 other "classic" ZOOB creations, everything from dinosaurs to DNA.