In the six weeks between the console's launch and the end of the year, the Wii U sold 320,000 units through Gamestop, the retailer has revealed in its year-end sales report

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The retailer has called this a successful launch, although its overall holiday-period sales were down on last year. Bear in mind that number is only from one retailer, but as it is a retailer with huge reach in the US and Australia, it's an important number nonetheless. Nintendo announced total week-one US sales figures of 425,000 for the Wii U, but has released no further numbers.In Japan, where the console launched on December 5th, the Wii U has sold just over 638,000 units so far, according to Media Create's independent data. European sales figures are still a mystery.Overall, it looks like the Wii U sales figures worldwide are actually pretty good, though not quite as good as Nintendo was hoping for (and still slightly behind the Wii at this point in the console's life cycle). If you ask me, taking European figures into account and estimating the console's likely December sales, the total figure might be nudging towards 3 million - but that's just a guess. We're working on an in-depth analysis of the Wii U launch, and hope to be able to show you exactly how well it's stacking up against the competition very soon indeed.

Keza MacDonald is in charge of IGN's games coverage in the UK and hopes that she'll have a lot more actual games to play on her Wii U in 2013. You can follow her on IGN and Twitter