LeapFrog  Disney Phineas and Ferb Learning Game (Works with LeapFrog Tablets, LeapsterGS, and Leapster Explorer) Join Phineas and Ferb on a wild adventure to build the ultimate water balloon launcher! Conduct experiments with circuits and electricity and use spatial reasoning to piece together a plan! Foil the evil Dr. Doofensmirtz by guiding Agent P's Platyball past pulleys, wheels and levers Teaches physical science, engineering concepts, problem solving, logic and reasoning skills and mathematics; Appropriate for children ages 5 to 8 years (grades kindergarten through 2nd grade) Works with all LeapPad learning tablets, LeapsterGS and Leapster Explorer (sold separately); Internet connection may be required for cartridge