The Master Chief has given the Xbox 360 its first victory over Nintendo’s wand-waggling Wii in the key US games market. According the NPD Group, Microsoft sold 3.3 million copies of Halo 3 in September, making it the best-selling game of the year, eclipsing nearest rival Wii Play by over a million. In the same month, sales of the 360 also doubled, to 528,000 units. This edged it past the Wii, which shifted 501,000 boxes. Sales of the PlayStation 3 tanked at 119,000 units during the same period.