After having had the Family Challenge Outdoor Challenge for a year (which is fabulous), we thought Santa would love to give this to the children for Xmas and we have to say we were disappointed by this one. We have children aged 4, 5 and 6 and they really enjoy the Outdoor Challenge, are able to handle the controls and requirements of that game easily and its good, all round fun, whilst using up their energy nicely.
Unfortunately, we've found this one is just a step too complicated for them. They're familiar with the mat and menus, familiar with using the controller and nunchuck from the Outdoor Challenge (and of course loads of other games), but this one just seems to want to over-complicate the games, occasionally using combinations of the mat and controller that don't seem logical or quite right. Perhaps it's just their ages and in a year or so's time, I expect this game will be just right for them, but to be honest, we've found it very frustrating and extrememly disappointing. Oddly enough, even the mat doesn't seem to be as responsive than the one we got for the Outdoor Challenge one (they are identical and it's a shame you couldn't buy the game without the mat!).
If you're wondering which one to go for - get the Outdoor Challenge one. It's miles better (for children similar ages to ours anyway).