Such as giving an option of making private lobbies with codes.
Have you tried playing on Steam? With Steam Remote Play, only one player can use the keyboard, but you and your friends can connect and play with controllers remotely. Our plan is to release the game on consoles as well, but that will happen only with the full release, which will also include online play.
https://store.steampowered.com/app/2433560/Beer_and_Plunder/