The Elder Scrolls Online's next DLC pack, Orsinium, is the MMO's biggest ever expansion, says Bethesda.

Taking players to the titular Orcish homeland, Zenimax Online Studios says the expansion offers over 20 hours of additional gameplay.

The included quests will be available to all players, regardless of level.

In addition to the "colossal" new zone, Orsinium also features a new solo arena, new gear, and two new public dungeons.

Orsinium launches November 2 for PC and Mac, with console versions following two weeks later.

The DLC will arrive automatically to players with ESO Plus memberships; others can purchase it for around US$25.