Shoot, this thing is exploding. 2 million copies in 6 weeks.

“We’ve always held high hopes for Gears of War, but we never expected such an overwhelmingly positive response from critics and gamers all over the world,” said Michael Capps, president, Epic Games. “I can’t describe how stoked our team is right now. Our fans can absolutely count on Epic to keep delivering new gameplay through Xbox Live.”

And from what I hear, that expanded content is going to be free, too …