Black Ops is the best selling title in the U.S. in the last 21 months

Sales tripled in the second best selling title.

Curious sales data auditing NP Group U.S. have appeared in Ubisoft's latest financial results, which gathers sales data in the U.S. in the last 21 months.

Call of Duty: Black Ops appears as the clear winner with 15 million units sold in that market since it goes on sale in November 2010, tripling to other games that take longer for sale.

In second place is Just Dance with 5.2 million, followed by Madden NFL 11 with other 5.2 million to 4.7 million Halo Reach and fifth New Super Mario Bros Wii with 4.2 million.

call of duty black ops, game, fps, videogame, google