I've played Morrowind, Oblivion & Skyrim, plus the other Witcher games and enjoyed all, but this one tops my list. GREAT graphics, storyline, voice acting, etc. While playing you can see that a LOT of thought went into making this gem. A tiny example: when it rains, you will see (some but not all of) the NPCs actually seek shelter to keep dry. I've never seen this happen in any other game. And there are other things you'll notice while playing. This is a "must have."
Great story arc. The last game of the series was kind of a bummer because it meant the end of the series. How can the story continue with no Outsider? I really loved that old Victorian feel of the games. My only real complaint is that the voice actors should've been British\Scottish\Irish.