The gains that have made 2008 a blockbuster year for the video game market continued in August; however, the rate of sales showed signs of slowing down for the month. Overall sales growth was held to single digits for the first time since 2006, according to numbers released Friday from market research firm NPD. August industry sales remained strong and saw a 9 percent gain over last August, though the month posted the first single-digit percentage growth in 27 months, said Anita Frazier, an analyst at NPD.
