Restormel is the main world. Containing the main spawn, Ariamis, and 3 major cities.
The secondary world, containing the areas that greylisted players can build and play in. This was the original homeworld of the Elves and Dwarves, before the 500 year war forced them to vacate their homeworld.
World that primarily consists of dungeon and instance content.
The Event World contains events when they are organised by the Staff team. This can be anything from a raid, to a world boss, puzzle or a treasurehunt.