LeapFrog Leapster Explorer Learning Game System, Green The recharger needs to be purchased separate Leapster Explorer offers endless ways to play and learn A library of more than 40 games and activities includes cartridge games Children can learn school skills like reading, math, science and geography Expand the fun and learning in LeapWorld--a safe, online world of learning games and activities For use only with LeapFrog Explorer software. Not compatible with any other LeapFrog platform software.