Call of Duty: Black Ops 2 shakes the franchise formula enough that this developer-commentated trailer is essential viewing before the juggernaut lands. Treyarch’s David Vonderhaar introduces the Pick 10 class creation method, which adds an element of creativity and strategy to the mix. You’ll probably want to get good at this given that Call of Duty: Black Ops 2 is quite likely to be, once again, the multiplayer game of the holiday season and beyond. It arrives on PC, PlayStation 3 and Xbox 360 in November. http://www.youtube.com/watch?v=7o2o6_ok_QM&feature=player_embedded