To play Call of Duty: Black Ops 1 (BO1) multiplayer offline on PC, you can use built-in features or third-party tools to enable bots and local play. While "Combat Training" originally required an online connection, updates and mods now allow for a fully offline experience. Method 1: Official Offline Bot Support
Installation: Place the mod.ff and relevant script files into your Plutonium or game's zone and scripts folders.
You now have full access to weapons, perks, killstreaks, and all maps (depending on your version). Progression and unlocks work offline, but are saved locally only. To play Call of Duty: Black Ops 1
attacks, which are a known risk in older Call of Duty titles when connected to public P2P (peer-to-peer) lobbies. Steam Community for progression while offline?
It opens multiple instances of the game and assigns controllers/keyboard to each player. Combat Training menu in the first instance to start a match with bots. Feature Highlight: Offline LAN Protection LanLauncher Step 5: Play You now have full access
Launch the Game: Open Steam, download and install the game if you haven't already, and launch Call of Duty: Black Ops 1.
Here is the only reliable, legal method. Steam Community for progression while offline
Mode: Go to the main menu and look for Combat Training or Local Play.