J.P.
My daughter has the system - for 2 years now - she is 4. At first it was great. But the more she played with it the more I realized that perhaps she wasn't really getting much out of it other than it being a video game. So what I have done is limit her use and we have started using workbooks and I have gotten her flash cards, card games, and board games. I have noticed that the literal hands on has been more effective. She is very eager to learn. At first she asked to play ot all the time, but over time she has since somewhat forgotten about it and plays with it very minimally.
Good Luck