Nintendo has sold over three million units of the 3DS portable gaming system, with president of the Japanese gaming company Satoru Iwata saying that he felt the console had "regained its momentum." Much of this resurgence in 3DS gaming has been put down to new versions of first party titles like Mario Kart, which sold almost half a million copies in the first few days of December. In the same week of its release, Nintendo was able to push over 215,000 3DS consoles in Japan alone. TechCrunch has it that Iwata believes Nintendo will pass four million global unit sales of the ...