Treyarch's Black Ops enjoyed the biggest entertainment launch of all time across the US and UK, according to Activision, selling 5.6 million units combined day one and generating $360 million. Rockstar's Red Dead Redemption, one of 2010's biggest hits, sold in 6.9 million units worldwide during its first three months on sale. When Activision's financial year ends, how many Black Ops units will have been sold?