My sister is 9 years old (close enough right?) and she loves the Wii. Her favorite games are Wii Sports, Mario Party 8 (I hate that game but whatever), and Wario Ware Smooth Moves. Mario Strikers might be a bit too challenging for her though and Waluigi has that weird thing that he does. Also if she is like my sister she will enjoy the whole High School "Musuckal" game that was supposed to be coming out soon.