REDMOND, Wash.--(BUSINESS WIRE)--“Software sells hardware” has been Nintendo’s mantra for nearly 30 years. And, when you consistently make fun, unique, exclusive games featuring the likes of Mario, Link, Donkey Kong and Pokémon, you can sell a lot of hardware! The most recent example of this phenomenon is Nintendo 3DS, which has become the eighth Nintendo system to sell at least 15 million units in the United States, according to Nintendo’s internal sales figures. Since its U.S. debut on March