You can play Call of Duty: Modern Warfare 3 (2023) multiplayer offline through Local Play, which supports both split-screen and AI bots. However, "true" LAN support (connecting multiple separate consoles/PCs without an internet connection) is largely restricted to consoles and requires specific workarounds on PC. 🕹️ How to Access Offline Multiplayer To enter the offline menu on PlayStation or Xbox: Disconnect your console from the internet. Launch the game.

: You can add AI bots to your matches, adjusting their difficulty from to simulate a real multiplayer environment. Local Multiplayer & Split-Screen

In the current version of Call of Duty: Modern Warfare III (2023)

The community solution (TeknoMW3):

A popular crack/patch called TeknoMW3 (by the TeknoGods team) enabled true offline LAN on PC. How it worked: