In an interview with CNBC, Nintendo’s Reggie Fils-Aime revealed that most of the Nintendo systems have been sold through mega-retailer Walmart, which is quite surprising, as Walmart would have to beat Gamestop and Best Buy — who are usually at the top when game sales are in question. However, considering that Nintendo targets a more casual audience than its competitors, it’s reasonable to understand how Walmart is their best customer in the retail space. Reggie also revealed that the newly released Nintendo DSi had already sold 2.2 million units in North America.