The game was met with positive reception from critics, garnering a mean of 88 from aggregator Metacritic for the Xbox 360 and PS3 versions, and 87 for the PC version. It has become a commercial success, having sold more than twelve million units since its initial release. Seven VIP map packs as well as a downloadable game mode have been released thus far, plus an expansion pack centered on the Vietnam War, which was released on December 21, 2010.