Mario Kart 8 has now sold more than 1 million total units in the United States alone, becoming the second Wii U game to cross that milestone, along with New Super Mario Bros. U (1.69 million). Mario Kart 8 continues to drive momentum for the Wii U platform. Through the first seven months of 2014, total sales of Wii U hardware and software have increased by nearly 60 percent and more than 135 percent, respectively, over the same period in 2013.