: If you have the game files, you can host a server using the TerrariaServer.exe found in the game's local folder.
For mobile users (iOS/Android), there are specific apps designed to facilitate multiplayer: : If you have the game files, you
If you are using a non-Steam or "cracked" version of the game, standard Steam "Invite to Game" features will not work. Instead, you must use direct IP connections or Virtual Private Networks (VPNs). : If you have the game files, you
The host starts the game and provides their virtual IP address (visible in the VPN client) to the other players. : If you have the game files, you
: Using tools like LogMeIn Hamachi or Radmin VPN allows you to create a virtual local network. Install the VPN and create a private network. Have your friends join that same network.