This specifically modified client allows users to load all three core sections of Black Ops II— Singleplayer (SP), Multiplayer (MP) with custom bots, and Zombies (ZM) —without relying on active Steam connections or secondary matchmaking networks.

This is the most critical step. You must place the files into the root directory of your game installation.

If prompted to overwrite or replace existing files, click . Step 4: Configure Your Offline Profile