Mario Star Tennis ('マリオスターテニス), also known as Mario Superstar Tennis in Europe and Australia, is a Mario sports game for the Nintendo Wii. It is the successor to Mario Power Tennis for the Nintendo Gamecube. It was first released in Japan on June 7, 2011, and then in the U.S. and Canada on June 20, 2011, and in Europe and Australia on June 28, 2011. It is rated E for Everyone and contains comic mischief and mild violence.