Over The Network - Starbound

: This is the simplest method for online play. You can right-click a friend in your Steam Friends List and select Join Game or use the Invite to game option. Ensure "Connect via IP" is enabled in your in-game options to facilitate some connection types.

Playing Starbound over a network can be done through a direct Steam connection, a local area network (LAN), or by setting up a dedicated server for players across the internet. Multiplayer Connection Methods Starbound over the network

A dedicated server allows your world to stay online even when your main game is closed. How to set up a Starbound dedicated server - IONOS : This is the simplest method for online play

: To host for friends over the internet without Steam, you must forward port 21025 on your router to your computer's local IP. Friends will then connect using your public IP address. Playing Starbound over a network can be done