LeapFrog Explorer Learning Game: I SPY Treasure Hunt (works with LeapPad & Leapster Explorer) Works with the Leapster Explorer and LeapPad Explorer systems (sold separately). Earn map pieces by solving logic puzzles and riddles. Polish critical-thinking skills by following the pirates' maps to their treasures. Build vocabulary skills and more on three separate scavenger hunts. Teaches logic and reasoning, problem-solving and vocabulary skills. Appropriate for children ages 5 to 8 years.