First Darksiders II DLC adds two new dungeons, additional enemies and unique loot.
A third week at No.1 for Square Enix's open-world action title.
New Super Mario Bros. 2 in at No.2, whilst Sleeping Dogs doesn't replicate the success it has had in the UK.
The second largest launch ever for a non-Warcraft MMO PC title, behind Star Wars: The Old Republic.
Sleeping Dogs holds on for a second week at No.1 despite strong sales of THQ's Darksiders II, which moved 80 per cent more units in week one than the original in January 2010.