Cowen & Company analyst Doug Creutz estimates that BioShock Infinite moved 878,000 copies in the US last month. This figure comes from an analyst note sent out to investors as reported by GameSpot; we've contacted the NPD to confirm firsthand.

BioShock Infinite was the top-selling game in the US for March, besting Tomb Raider and Gears of War: Judgment for top honors. Compared to March 2012, last month's physical retail game sales were ten percent weaker, while hardware pulled in 32 percent less revenue.