Are the two Leapstart Players compatible?
Yes, the two versions of LeapStart are 100% compatible.
The differences in the two versions are limited to color and form factor.
There is white with blue accents LeapStart Player intended for pre-school aged children and a blue with green accents version intended for Kindergarten and Grade 1.
The younger version has a handle and a chubby stylus for an easier grip by young children.