LeapFrog Leapster Educational Game: Kindergarten For use with Leapster 1 and Leapster 2 only - they will NOT work with the new Leapster Explorer or Tablet Style LeapPad systems Teaches 45 essential reading and math skills Reading skills include phonics, rhyming, spelling, and upper/lower case letters Math skills include math terms, numbers & counting, and logic Kids play to earn tickets to buy monster parts, then build a complete monster and bring it to life For use with the separately sold Leapster Learning Game System