For the second year in a row, retail sales were down in the video game industry — the first time it has recorded negative growth in back to back years.

The industry, as a whole, was down 6 percent compared to the 2009 figures, with sales of $18.58 billion. Software sales, which investors consider the best barometer of the industry’s health, were down 6 percent as well to $9.36 billion. (Adding in PC sales, the amount climbed to $10.1 billion, a 5 percent drop from last year.)

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