This drama left me with a bag full of tissues and a heart full of memories, however, it does not make me think it was the best drama I've ever seen.
I hope people just don't watch it because of the enormous recognition it got, believe me, it's not it overrated, it has everything,  amazing CG and scenery, phenomenal set and props, and the amazing work the actors transferred through the screen.
Before watching this drama I had never heard anything about Goblins because where I grew up it's not implanted in my culture if you are in the same situation I do hope you know this story doesn't actually use many characteristics of "real" goblins, the ones in books, most of it is fabricated by the writer, which had an amazing imagination to pull it off so smoothly with a sprinkle of fantasy.
It easily became a drama blockbuster in South Korea without any doubt.