Because Treyarch wanted to outsell Modern Warfare 2 and make more selling games and DLCs than Infinity Ward did. They were successful and even the new game Call of Duty Modern Warfare 3 has not yet outsold Call of Duty Black Ops. It is also the business of Treyarch to develop Video Games and they release a new game every 2 years. They also made Call of Duty 3 in 2006 and Call of Duty World at War in 2008 and will make a new Call of Duty for release in November 2012
Black Ops 2 was made in 2012.
Call of Duty: Black Ops was made by Treyarch
Because black ops is made by treyarch and they made world at war zombies
Call of duty Black ops was Made November 9th 2010
zombie mode is in black ops because of public demand. tryarch was to help make black ops and in world war tryarch made nazi zombies so when they made black ops they included it in
Treyarch made Black Ops for activision
Treyarch made the game for Activision
me
Treyarch who developed Call of Duty Black Ops is a California based company
Treyarch
Tu madre
Treyarch. You can see the name in the beginning video when you start the game. there is no single person who made black ops. a whole company made it together.