Nintendo's handheld business is booming right now, and the company has the stats to prove it. In its annual overview released today, the company says it sold a record-breaking 16 million 3DS games in 2013, which translates to a 45 percent increase over last year. US consumers played a big part in Nintendo's bumper year, accounting for 11.5 million of Nintendo's 35 million 2DS and 3DS lifetime sales. Despite its precarious financial situation and a recent ruling requiring it to share some of its 3DS sales revenue, Nintendo reckons it has plenty more left in the tank: "We're not slowing down in 2014," says Scott Moffitt, Nintendo's EVP of Sales, "the best days of Nintendo 3DS are still to come."