Life-to-date sales of the Xbox 360 HD DVD add-on hit 269,000 in November, representing a 3.4% attach rate to the 360 console itself.
That's according to leading market researcher NPD Group, which released its November video game sales data late Thursday.
The newly-released data would seem to lend further insight to earlier numbers released by the HD DVD Promotions Group, which reported total sales of all dedicated HD DVD players (including the Xbox 360 add-on) at 750,000 players through November 25. The earlier numbers did not break out sales of the add-on vs sales of standalone HD DVD player sales.
November saw steep inclines across the board in the video game market, with sales of software, hardware and peripherals growing by 52% over last year's numbers. Game accessories alone accounted for $243 million in revenue.