While we will have to wait until the NPD Group's list to see how Prototype did in retail stores, the latest Steam weekly sales numbers have the Radical Entertainment-Activision open world action game at number one for a second straight week.

Thanks to the 50 percent off sale this past weekend, Empire: Total War is number two on this week's list. Also the PC version of Ghostbusters (sans multiplayer) shows up at the number four spot. The introduction of the last two Elder Scrolls games to Steam last week caused two editions of the RPG series to show up on the list. Finally Killing Floor remains in the top 10 for another week.