If you are looking to to solve this permanently within the game's code, consider implementing UDP Broadcasting :
: Program the Host machine to send a "Heartbeat" packet every few seconds on a specific port (e.g., 8788) containing the Server Name and Internal IP. Craftopia Fix LAN.rar
: Craftopia typically uses port 8787 (UDP/TCP). Ensure this port is open in your router settings to allow peer-to-peer connections. If you are looking to to solve this