: Standard Combat Training on PC is online only —it requires an active connection to Steam/Activision servers to track your rank and unlocks.
To play multiplayer offline on PC for free, you can use community-made tools like Plutonium T5 or BO Loader . While the original Steam version of BO1 does not natively support a fully featured offline multiplayer mode with progression, these third-party clients and mods enable bot support, local LAN play, and offline access. Method 1: Using Plutonium T5 (Recommended)
: Download the BO1 Bot Warfare mod from ModDB and place the files in your %localappdata%/Plutonium/storage/t5/zone folder to enable advanced bots in private matches. Method 2: Using BO Loader (Standard Offline) : Standard Combat Training on PC is online
How to Play Call of Duty: Black Ops 1 Multiplayer Offline on PC
: Uses a lightweight BOLoader.exe to manage sessions and add AI bots to your lobby. Method 3: Native Combat Training (Limited) Method 1: Using Plutonium T5 (Recommended) : Download
: Host LAN matches without connecting to official Activision servers.
: Visit the Plutonium Installation Page and download the plutonium.exe launcher. : Visit the Plutonium Installation Page and download
: For true offline play without an internet connection, use a community tool like LanLauncher . Place it in your Plutonium folder and select "Launch T5" to skip update checks and log in locally.