This game is an expansion pack that is set in Vvanderfell, the setting for The Elder Scrolls III: Morrowind and the ancestral home of the Dark Elves. 

• A new PvP game mode is included called the Battlegrounds!
• A new 12-person Trial is included (The Halls of Fabrication)!
• A new class called Warden, a class with nature-based magic and War Bear ability, is added in this expansion pack!
• A new story mode set 700 Years prior to The Elder Scrolls III is added in this expansion pack!

Reviews

It’s a great addition to the Elder Scrolls Lore and a lot of fun to set foot upon those lands again with higher quality visuals and game mechanics. If you love your open world gaming mixed with a bit of sword and sorcery, grab a copy and don your armour… it’s time to save someone from something…. oooh what’s that quest icon over there for…..

Impulsegamer  

Elder Scrolls Online: Morrowind certainly offers some great quest lines and a fantastic nostalgia trip for those familiar with Vvardenfell. However, it feels a lot emptier, with monsters being simply unexciting and the new PVP being abysmally balanced. The new Warden class, however, offers an interesting new way to play.

Wccftech