Treyarch's Mark Lamia has been explaining about the differences between and their previous title, World at War.

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Given the lukewarm reception that World at War received Lamia has confessed that has taken some risks this time out.

Lamia said: "We've taken some creative risks. We want to do something different than we've done before. We want the game to speak for itself."

He continued, avoiding spoilers: "Without letting much slip about the single-player campaign plot, Treyarch demonstrated the sheer breadth of experiences you'll have in Black Ops."

Thanks CVG.

By Ewan Aiton