Mario Kart 8 is June’s top-selling retail game in U.S.

After becoming the best-selling week one game of any Wii U title, Mario Kart 8's sales have continued at a torrid pace.

In light of NPD Group's report, Nintendo has announced that Mario Kart 8 was the top-selling physical software SKU in the United States in June, selling more than 470,000 physical and digital units. The new figure brings the game's lifetime total to more than 885,000 units in the U.S. alone.

Since the game's release, Nintendo has also seen a bump in Wii U sales. The company noted that sales of hardware and software in June 2014 were up 233 percent and 373 percent, respectively, over June 2013. For the first half of the year, total sales of Wii U hardware and software have increased by 48 percent and 129 percent, respectively, over the same period in 2013.  

“These results reinforce the power of the Mario Kart franchise and speak to a bright future for the Wii U platform,” said Scott Moffitt, Nintendo of America’s executive vice president of Sales & Marketing. “History has shown that Mario Kart games tend to have an extremely long tail. We fully expect Mario Kart 8 to continue to drive momentum for our hardware and software business through the holidays and into the foreseeable future.” 

Looking ahead to the rest of 2014, the Wii U has a number of highly anticipated titles on the way, including Hyrule Warriors (Sept. 26) and Super Smash Bros. (Holiday 2014).