I bought this game because my son, 3 1/2 yrs like the looks of its cover (having spend most of his time on Mario and Sonic Olympics.
What a buy it has been! Forget about the minigames, the main game (with 8 levels) will drive you emotions crazy. At first, I have to play as my son was not too sure he can manage it. What a great bond we have built during our time with this game. I have now completed all the levels and my son is attempting to complete them as well. Its definately not too difficult for his age as he has completed quite a few levels already.
P.S. We bought it three weeks ago, and my son is still on it like it's new.