Nintendo has sold over 10 million copies of Wii Play in the US since its launch in February 2007, according to data provided by NPD.
"Wii Play mini-games are fun and they get people playing together," said Cammie Dunaway, Nintendo of America's executive vice president of sales & marketing.
"Even if you believe people are buying Wii Play solely for the controller, that indicates that there are now more than 10 million people who have an extra Wii Remote controller in their homes."
She continued: "When added to the 12.7 million Wii Remote controllers that have sold separately, this reinforces the growing social gaming trend we have been seeing where friends and family use their Wii games as a social hub - both in person and online."
For February 2008, Nintendo US sales were up 74 per cent, with the Wii and DS topping the region's hardware sales.