Call Of Duty Black Ops Sig Series BradyGames leads you through the follow-up to the Best Selling Game of All Time. Join Black Ops forces in the secret campaigns that occurred during the Cold War.&nbsp; Complete Campaign Walkthrough. , Comprehensive Multiplayer Coverage. , Exclusive Maps for Every Single-Player and Multiplayer Level. , Analysis of All-New Gameplay Features. , Plus, Achievements and Trophies, Co-Op and Nazi Zombie C