The sales-tracking data hounds at NPD have released their figures for March 2013, which collectively place hardware sales down, physical software sales slightly up, and BioShock Infinite at the top of the best-selling pile.

The physical retail sales sector of the U.S. video game industry pulled in 10 percent less coin than it did during the same five-week period in 2012, amassing a total of $992.5 million between March 3 and April 6, 2013. Hardware sales took the biggest hit out of the three monitored retail sub-categories, bringing in a total of $221.6 million, a 32 percent year-over-year decrease. Microsoft's Xbox 360 claimed its 27th month as the best-selling console in America, selling 261,000 units, down 13.5 percent from last month.

Meanwhile, overall physical software sales (console, portable and PC games) outperformed March 2012 by two percent: $602.4 million in 2013, as compared with last a total of $592.2 million in sales last March.

BioShock Infinite took an immediate victory over the rest of the period's release calendar, with Tomb Raider and Gears of War: Judgment rounding out the podium lineup. Luigi's Mansion: Dark Moon placed sixth overall; we learned yesterday it has sold 415,000 units. Though that figure's retail-to-digital ratio remains undefined, the "vast majority" of sales took place at retail, according to Nintendo's Scott Moffit.

As always, jump on through for the top 10 best-selling games of March, 2013.