Hi Christy,
My 4 year old daughter loves the Wii. So much that we had to get a timer to limit her use! She enjoys most of the games on the Wii Sports and Wi Fit Plus, although many of them are too difficult so she partially plays them. She has Crayola Colorful Journey for a less active game. It took a little time for her to grasp all of different things you can do, but now that she knows, she is far better at it than anyone else in the house! We buy the games at Game Stop, a place where you can buy used games. This way if she does not like them or becomes bored with them quickly, we haven't lost $40-50. We have a few games geared towards girls that we never thought she would be able to play, but she has proved us all wrong! Many games have different levels that is helpful when they are 1st starting out. Have fun!