A Realm is the place where a player can build its empires. Age of Empires Online allows you to choose a server or "Realm" to start your civilization on.
- When starting a new civilization, you are given the choice of which server or "Realm" you will like to start on. These are arranged by language, with several Realms for each language.
- You cannot interact in-game with players from other Realms (chat, co-op, PvP, trade)
- Also one can change realms from time to time from the bottom of the civilization selection page. Changing realm was free of charge.
- Right now the only Realm available is hosted by Project Celeste