Hardware constraints dragged on February's NPD results, but PlayStation 3 saw unit sales up 30 percent year over year -- and though Sony is facing supply constraints, it still plans to make a major sales milestone by the end of the month. "There continues to be incredible demand for PlayStation 3, but tight inventory is definitely having an impact on recent sales numbers," says Sony Computer Entertainment corporate communications senior director Patrick Seybold. "That said, we’re still tracking to sell 13 million PS3s worldwide by the end of March, which marks a 30 percent increase over last fiscal year." That's two months of 30 percent year-over-year growth in a row. "The platform is showing no signs of slowing down," says Seybold. "This year will once again showcase how deep and broad our content offerings are with breakout titles like Heavy Rain, which ranked in the top ten in February with only a week of sales in the month." Additionally, Sony's PS3-exclusive God of War III launches this month, and is likely to see little competition in its run for the top of March's software charts. Sony also expects positive attention thanks to the more detailed reveal of its PlayStation Move motion control system this week at the Game Developers Conference. "Needless to say, 2010 will be one of our best years ever for PS3 and we expect continued momentum for PSP and PS2," says Seybold.