Neverwinter Nights: Hordes of the Underdark is in most aspects the expansion I was waiting for. The storyline is reasonably interesting, there’s plenty of new stuff to check out, and it looks pretty good. It’s not an amazing expansion, but it's better than Shadows of the Undrentide in every way. If you’ve played through Neverwinter Nights, and maybe even the first expansion, then you owe it to yourself to finish the story.