Microsoft’s gaming console has remained the best-selling system in the United States for the 27th consecutive month, according to new data from NPD Group. The Xbox 360 sold 261,000 units in the U.S. in March, beating out Sony’s PlayStation 3 and Nintendo’s Wii U. As a whole, physical sales were down 10% year-over-year from $1.1 billion in March 2012 to $992.5 million in March 2013. Software sales remained almost flat at $554.8 million, only inching down just 1% from a year ago. The steepest decline came from hardware sales, which dropped a whopping 32% to $221.6 million. Portable consoles are said to have experienced a “stronger decline” than traditional ones, however sales of the Nintendo 3DSÂ grew an estimated 9% year-over-year. Microsoft is expected to introduce an update to the Xbox, possibly called the Xbox 720 this spring.