Underdark was released on November 17th, 2015 and is the 8th modular expansion added to Neverwinter and added a new campaign. The campaign consists of 9 chapters where you help Bruenor and Drizzt against demons invading the Underdark.

 

3 new skirmishes:  Thrown of the Dwarven God (ToDG), Prophecy of Madness (PoM), and   Demogorgon Fight (Demo). PoM, ToDG, and normal Demo have only one requirement to enter, level 70. Normal Demo can only be entered at half past the hour (XX:30). The epic version of Demo, edemo, requires an IL of 2,500 along with being level 70, but it can be queued into at any time. The Demogorgon fight is a small raid that is composed of a party of 10 members.

 

Finally, there is the new boon structure, see image on right.  In order to complete this boon tree, one must Porcess Faerzress 35 times. Each process period takes 200 Faerzress and 18 hours; in total, 7,000 Faerzress and 35 days. Faerzress can be obtained by completing the skirmishes or demonic HEs on other level 70 maps.