The game is packaged with the Wii Wheel accessory which is designed to house the Wii Remote to allow more intuitive and conventional steering. The game was released on Apin Japan, Europe a day later, 2 weeks later in Australia, Apin the US and April 30th, 2009 in South Korea. Mario Kart Wii, stylized as MARIOKART Wii and often abbreviated as MKW and MKWii is a Mario kart-racing video game by Nintendo for the Wii console and the sixth game in the Mario Kart series, the fourth for a home console.