Nintendo  is reporting  an annual net loss of $533 million this quarter, a first  for the consistently profitable gaming firm. Dwindling Wii sales are said to be behind the unusual results. Ninendo hopes to return to a profit this year, though, on the back of a new Wii U console and a new version of its best-selling Super Mario Bros. game--both due to launch later this year. The smashing success  of social games and mobile games, like those created by Zynga  and Rovio  are also eroding Nintendo's core customer base.
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