S.H.
My kids' Grandma has a Wii.... since my youngest was about 2 years old (and he is now 4 years old).... my eldest is now 8... they love it and play it and we all do.... it is very family oriented.... my kids like the sports games.... and for us the adults... we work out/exercise with it.... and you do sweat with it.
It is good for the whole family....
www.gamestop.com is good for seeing what games there are and the ratings/prices of it... and what games are for kids.
The game "Cooking Mama" is great for kids and real fun.... both for little girls and boys. I even find it fun!
good luck,
Susan