"Overview - Welcome to the new USA Pre-orders Article. This means the data doesn’t include Mexico, Canada, Latin America, etc. There are two games in the top 30 to be in its final week before launch: Mario Kart 7 (3DS) and Just Dance 3 (PS3).
The top five games include Star Wars: The Old Republic (PC), Mario Kart 7 (3DS), Mass Effect 3 (X360), Diablo III (PC), and Tom Clancy’s Ghost Recon: Future Soldier (X360).
The top four games have 200,000 or more pre-orders, the same as last week, and the top eight has 100,000 or more pre-orders, the same as last week. One game adds 20,000 or more, down from five last week and three add 10,000 or more, down from six last week."