To make sure you can enjoy Lost Ark’s variety of content types with friends and guild-mates, check out the following world and region-specific lists.
World-specific
Activities that you can only do with players on the same world as you:
Guilds and Guild vs. Guild Content
Mailing and 1:1 Exchanging
Friends List
Professions (competing for world nodes)
Islands Events
Premade Normal PVP Queue
Strongholds (in-game player housing system)
Region-specific
Activities that you can only do with players from the other worlds within your region:
Your character name
Messaging
All daily PVE content (Guardian Raid/Chaos Dungeon)
Cube/Platinum Fields
All raid content
Auction House
PVP Arena
Custom Premade PVP Lobbies
Source:
Lost Ark Support
