Burning Crusade and World of Warcraft reigned atop the industry-tracking NPD Group's weekly sales charts as the best-selling PC games for the week of January 21 to 27, with the recently released expansion continuing to draw interest from a fan base that purchased 2.4 million copies in the game's first 24 hours of availability.

Backing Vivendi's gruesome massively multiplayer twosome on the charts is another cash-cow/expansion pair, The Sims 2 and The Sims 2: Pets, in third and fourth place, respectively. The life-simulating games from Electronic Arts are followed in fifth place by a more militaristic effort from the publisher, the futuristic first-person shooter Battlefield 2142.

Leading off the back half of the top 10 in sixth place is the game based on Howie Mandel's latest paying gig, the TV game show Deal or No Deal. The similarly casual puzzle game Bejeweled 2 closed off the top 10, with hardcore strategy and simulation efforts from Microsoft and Sega filling the spaces in between.

via gamespot