Well it's hard to say first because I've been playing it since it was released, but anyway. I'm finding it a lot of fun so far, as per-usual the game world is very large, and the mountains and valleys make exploring a lot trickier then in the previous game Oblivion, and more akin to that of it's predecessor Morrowind. Quests and the like are many, and vary in type as they should, but also the addition of favours which are small tasks that you do for local people are also like Morrowind as they are fairly open-ended tasks that do not involve the use of a way-point to direct you, rather you look for your objectives on your own.
Aside from game-play changes many graphical changes have occurred as well. Land scape, towns, dungeons, and people are all redone making the hard, cold realm of Skyrim, feel just as cold as it looks and come to life with a new grim, elegance that could only be achieved in an Elder Scrolls game. And once again going back to Morrowind days the inhabitants of this frozen land are hard edged and filled with life like detail that puts their doughy Oblivion counterparts to shame. The sound-track also takes some Morrowind originals and fits them into the game making it so much more easy to see the Morrowind nostalgia trip that the developers must have went through wile making this awesome game.
All and all I've only played for a few hours, and all I can say is that it's so far the best game I've played since Oblivion and hopefully it will still impress me further as I delve deeper into the tundra that is The Elder Scrolls V: Skyrim.