I've updated the article with new software information for Just Dance 2, Black Ops, Dead Space 2, Zumba, NBA, DKC, Red Dead and then filled in for AC, Dance Central and Michael Jackson with the new information. So we now actually have the full top ten (with 7-9 estimated)
01. Call of Duty: Black Ops* (360, PS3, WII, NDS, PC) Activision Blizzard - 750,000
02. Just Dance 2 (WII) Ubisoft > 500,000
03. Dead Space 2 (360, PS3, PC) Electronic Arts - 453,000 (441,000 without PC)
04. Little Big Planet 2 (PS3) Sony - 353,000
05. Zumba Fitness: Join the Party (WII, 360, PS3) Majesco Over 300,000
06. NBA 2K11 (360, PS3, PSP, WII, PS2, PC) Take 2 Interactive - 261,000
07. Assassin's Creed: Brotherhood (360, PS3) Ubisoft - logically 245k ish
08. Dance Central (360) MTV Games - logically 229k ish
09. Michael Jackson The Experience (WII, DS, PSP) Ubisoft - logically 212k ish
10. DC Universe Online: The Next Legend Is You (PS3, PC) Sony - 195,000
xx. Donkey Kong Country Returns about About 167,000
xx. Red Dead Redemption 94,000
xx. Udraw 26,000
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu
