Game software sales rose 6 percent to $605 million in the month, while hardware sales tumbled 26 percent to $280 million, NPD said.
Sales of accessories rose 18 percent to $142 million, helped by demand for Sony's Move motion-controller.
Microsoft's Xbox 360 was the only home console to see year-over-year growth in the month. It is the best-selling console this year in the United States on a unit basis, according to NPD data.
Take-Two Interactive Software's "NBA 2K11" was the top-selling game in the month, when accounting for sales across all platforms.
Overall video game industry sales are down 8 percent this year. NPD estimates it captures roughly 70 percent of consumer spending on games in the United States. It does not account for digital distribution, used game sales, rentals, social network games and mobile applications.
- consumer spending
- video game industry sales
- digital distribution
- video game hardware