Microsoft has announced that having launched worldwide on November 7, Gears of War 2's weekend sales exceeded two million units. Microsoft also noted that the game is well on its way to becoming one of the biggest releases of this generation.

"We were so excited to launch 'Gears of War 2' on the same day all around the world, something virtually unheard of in the games business," said Cliff Bleszinski, design director at Epic Games. "We wanted our fans, no matter where they live, to have a shared experience on day one, and that's exactly what's happened."

Over 1.5 million people logged into Gears of War 2 on Xbox LIVE during the weekend, clocking a combined 15 million gameplay hours and setting a new record for concurrent LIVE players. These players also unlocked more than 19 million Achievements.

For more on Gears of War 2 head over to's review.