From TheWarWiki

Dungeons are areas in Warhammer Online that are created for players to group together and defeat mulitple mobs and typically an end boss. Dungeons can be either open world dungeons or instanced dungeons and contain champion and hero class mobs. The standard recommendation for group composition in an instanced 6 player dungeon is 2 tanks, 2 healers, and 2 dps. Dungeons are not to be confused with Lairs, which are typically much smaller.

Instances

Players entering instances will not encounter any players from the opposing realm. Even though both realms are able to do some of the same instances, they will be seperated and never come in contact with one another. The End bosses are heavily instanced and will only be able to be attacked by one 6 man group at a time. Dungeons/instances come as 3 types:

• [[Realm Instanced]] dungeons are only instanced for each side. (Everbody from the same Realm/Faction adventures together in the same instance/version of the dungeon.)

• [[Warband Instanced]] dungeons have separate instances for each Warband (a collection of several 6-man Groups) who adventure together but may be in seperate area's in turn not really helping each other.

• [[Group Instanced]] dungeons are instanced per 6-man Group, so that each Group of 6 players experience a separate version of the dungeon, by themselves.