While (CK3) does not have a dedicated "LAN mode" button like its predecessor CK2, you can still play with friends on the same local network for a more stable experience. Modern CK3 multiplayer primarily functions via the Nakama MP servers , meaning even players in the same room typically connect through Paradox’s online infrastructure. Setting Up a "LAN" Style Session in CK3
Blood, Oaths, and Ethernet Cables: Why a CK3 LAN Party is Pure Chaos (and You Should Try It) ck3 lan multiplayer