If you are looking to to solve this permanently within the game's code, consider implementing UDP Broadcasting :
The "Craftopia Fix LAN.rar" file is likely a community-made patch or mod designed to bypass multiplayer connectivity issues, particularly for users on older versions or those attempting to play via Local Area Network (LAN) emulators like Hamachi or Radmin VPN. Recommended Official Fixes Craftopia Fix LAN.rar
: The game underwent a major "Seamless World" update that replaced the old island-hopping system. Ensure all players are on the same version (Stable vs. Alpha/Beta) via Steam properties. If you are looking to to solve this
: The Client's "Join LAN" menu should listen for these packets on the local subnet. Alpha/Beta) via Steam properties
: Be extremely cautious with .rar files from unofficial forums or Discord links, as they often contain malware or outdated DLLs that may trigger anti-cheat bans.