Nintendo DSi Hits U.S.

Nintendo is rolling out the next generation of its popular handheld gaming console in the United States.

Aside from game-playing functions, the dual-screen DSi features two cameras, a microphone and a host of tools that will allow users to create content and share with others.

The DSi will retail for $170 apiece and began selling in Europe on Friday. The third generation in the DS franchise, the DSi was launched in Japan last November and has so far sold 2 million units.

Nintendo's DS line competes directly with Sony's PSP handheld device and increasingly faces competition from Apple's iPhone, which is emerging as a serious video game platform, and iPod touch devices.

The PSP has sold more than 50 million units, while the iPhone and iPod Touch have combined to sell more than 30 million.

Nintendo is also launching a new online store where DSi users can download new games and applications via the device's WiFi connection. The store will also offer a DSi Internet browser for download, based on the Opera browser.

Nintendo has been credited with helping expand the traditional demographic profile of the gaming industry. The company's Wii console has been a hit with consumers, attracting adults and females who are more interested in casual and social games.