Wacky Professor Quigley makes learning about letters fun! Twenty-six playful games at the Letter Factory and an interactive letter book help your child learn more about letter names, letter writing and letter-sound relationships. Leapser2 players can connect online for extra activities and rewards. And with the LeapFrog® Learning Path, parents can see what their child is learning. Works only with Leapster and Leapster2 learning game systems.