NPD reports that Mass Effect 3’s first-month sales hit 1.3 million units in the US across the Xbox 360, PlayStation 3, and PC versions.
These numbers only include sales of a physical disc and doesn’t factor in digital downloads. Numbers haven’t been broken down by console but Microsoft’s Aaron Greenberg tweeted the Xbox 360 version sold 943,000 unites which beats out the PS3 version 4:1.
To compare, Mass Effect 2 sold over half a million sales on the Xbox 360 in its first month with another quarter million the next month. Its safe to say that Mass Effect 3 was a bit popular out of the gate.