Guide :: Play Conan Exiles in Offline Mode - Steam Community
(as of current) No fully stable, feature-complete offline mod is publicly released due to the complexity of server-side simulation. Several experimental scripts exist on GitHub and Nexus Mods, but most require advanced technical knowledge. Development is ongoing in small modding circles.
: If the game or Steam updates, you must go online once to re-verify your license before going back to offline mode.