Lamia hopes "people are excited by the changes," coming to Black Ops 2

Black Ops 2 will be different from Black Ops 1, according to Treyarch studio head Mark Lamia, and he hopes gamers will be "excited by the changes," the developer has implemented into the series.

Speaking with Polygon, Lamia said when it came time to make another entry to the Black Ops branch, the team didn't just want to grab the previous Call of Duty title and "update it."

Instead, the team went to Activision with the deliberate idea that the games wouldn't " fit into any kind of time period or preconceived notions," of what covert operations might be like.

"[We] rethought everything, from setting, to the new toys to play with, to story branching, to meaningful choice inside the campaign," said Lamia. "When we decided to talk to Activision about the branding of Black Ops, it was very deliberate, like: 'Look, Black Ops is more of a characteristic of the personality of the game.'

"We love the idea that Black Operations were off the radar and creatively, you had that conceit that these guys could do all kinds of things. It didn't have to fit into any kind of time period or preconceived notions of what these operations might be like.

"So the teams got very creative with that, whether it was with the story or the multiplayer. You'll see all kinds of gadgets, you saw it in Black Ops, you'll see it in Black Ops 2, we just went for it with the weapons. It was about: 'This is fun to play.' We were able to, in our own way, justify it within the fiction of Black Ops. These guys, they always had access to the best of the best. They'd get prototype weapons, they'd modify weapons, they'd do all kinds of stuff perfect for gameplay. That was a really great creative thing to build on."

Lamia said since Treyarch has been developing Call of Duty titles for along while, it "wanted to make some different changes inside the franchise," which he hopes will invigorate fans of the series as it did with the development team.

Call of Duty: Black Ops 2 is out 13 November on PC, PS3 and Xbox 360.