Black Ops became an all-time sales leader in the U.S. and Europe on the 360, PS3, and PC in the first quarter.

That Activision Blizzard had a hit on its hands with the release of Call of Duty: Black Ops last November is no surprise, considering the game made more than $1 billion in less than two months. However, the publisher today clarified just how big of a hit Black Ops is, announcing during Activision Blizzard's first-quarter earnings report that it is the highest-earning game of all time on the Xbox 360, PlayStation 3, and PC in the U.S. and Europe.

Unfortunately, Activision Blizzard did not release updated sales figures for the Cold War-era shooter. However, the publisher did say that the Treyarch-developed title was the No. 1 overall seller in the U.S. and Europe during the January to March quarter. That performance apparently bests that of Nintendo's Pokemon Black and White, Capcom's Marvel vs. Capcom 3, and EA's Dead Space 2.

Read more of "Call of Duty: Black Ops best-seller on 360, PS3, PC" at GameSpot.