Hi Hytaler,
short answer: yes, Hytale is multiplayer. You have 2 ways to play with friends:
Share code: you open your own single player world, your friends join with a code. Free, takes 1 minute, but the world is only online while you play.
Own server: a dedicated server that runs 24/7. More work, but the world is always there and it handles more players.
Everyone needs their own Hytale account. It runs on Windows, Mac and Linux. There is no official server browser in the game yet, Hypixel still lists "server discovery" as a future addition in the server manual.
Way 1: share code (Online Play)
Before you start: add each other as Hytale friends. Sounds stupid, but this is the step people skip. The best connection methods and the...