We only just reported that Mario Kart 8 is spinning up some good sales for Nintendo, selling 1.2 million copies in a week, but the game is so successful in Japan that it is hurting Sony's PS4 sales.
Between May 25 and June 1, the Wii U was the top-selling console in Japan pushing 19,312 units. The PS4 on the other hand, sold only 6,508 units in its home country. When it comes to Mario Kart 8 sales, it was the the leader of the top 20 games sales chart, selling 325,892 units in Japan, for a total of 1.2 million worldwide so far.
The PS4 continues to dominate in the US, but it isn't doing so well back in its home country of Japan. Sony has sold just 500,000 or so units in Japan, so if Nintendo can unveil some exciting new titles at E3 next week, Nintendo could soon take control of its home country and put a nail in Sony's coffin - in Japan at least.