For a more modern experience with improved features like wider FOV and better bot AI, community clients are recommended:
But can you really play Black Ops multiplayer without an internet connection? The answer is , but it requires a specific setup. Unlike the console versions (PS3/Xbox 360), which offer split-screen offline play out of the box, the PC port hides its offline multiplayer features behind a few menus and configuration tweaks. how to play call of duty black ops 1 multiplayer offline pc
If you own the DLC (Annihilation, Escalation, etc.), the game might freeze offline when loading those maps. Solution: Stick to the base 14 maps (Firing Range, Jungle, Summit) in Combat Training. The DLC requires a license check via Steam. For a more modern experience with improved features