Call of Duty: Modern Warfare 3 had the biggest entertainment launch in history, so even with an 87 percent drop in unit sales last week, it's little surprise the shooter maintained its alpha position on the UK sales chart for its second week on retail shelves.

Assassin's Creed: Revelations debuted in second, with the strongest opening yet for the franchise. Unit sales and revenue were up four and eight percent, respectively, from last year's Brotherhood launch. Not only was the latest Assassin adventure the strongest opening stab by the franchise to date, it was also the strongest premiere of any Ubisoft title.

Skyrim slips from second to third, with Saints Row: The Third entering in fourth. The latest Saints Row crime spree is another strong sequel, with sales up 43 percent from Saints Row 2's launch three years ago. Last week also saw a slew of prominent premieres from Halo: Combat Evolved Anniversary, The Legend of Zelda: Skyward Sword and Super Mario 3D Land. Check out the UK top ten after the break.