Complex sentence: The game received critical acclaim from video game publications its biggest selling game of 2009-2010 and has sold more than 12 million copies as of Throughout 2010 and has an overall 14 + million sold copies.
Split into simpler sentences: The game received critical acclaim from video game publications. It was the biggest selling game of 2009-2010 and has sold more than 12 million copies as of Throughout 2010 and has an overall 14 + million sold copies.