There are 19 Factions in the Underworld, which is accessible after after completing the Sin of Maraj questline.
Below the realm of Krystara, there exists an Underworld where additional kingdoms, known as Factions can be unlocked after completing the Sin of Maraj questline. These kingdoms differ from the traditional ones of the world above in that they don't provide a gem mastery, nor a universal skill bonus, nor a specific tribute reward. The quest lines are shorter for factions than other kingdoms, there are no Challenges, there is no ability to Explore in a faction's kingdom, and so far there are no classes linked to a Faction and there are far fewer troops than other kingdoms.
Factions do have banners like other kingdoms and troops gain a kingdom bonus when used together. Each faction is also linked to one kingdom from the world above and all of the faction's troops benefit from their linked kingdom's bonuses. Factions also offer a new form of play called Delves, have a treasure Hoard which can be improved, and introduced a system of Renown for additional rewards.
City of Thieves
The Deep Hive
Hall of Guardians
Sea of Sorrow
Underworld troops are generally shared with another Kingdom from Krystara, but they are only achieved from fighting in each delve, and subsequently using shards to purchase portals for your treasure hoard.
Here are the factions, and their related kingdom.
|City of Thieves||Leonis Empire|
|Crypt Keepers||Sword's Edge|
|Dark Pits||Mist of Scales|
|The Deep Hive||Drifting Sands|
|Hall of Guardians||Whitehelm|
|Mirrored Halls||Glacial Peaks|
|Primal Rift||Forest of Thorns|
|Sea of Sorrow||Merlantis|
|Sunken Fleet||Bright Forest|
|The Warrens||Pan's Vale|
|Wild Court||Divinion Fields|
Also See: Troops