Its easily GOTY material. Evolving quests, thinking NPCs,, nothing is completely scripted NPC's have a few set behaviors they can carry out in unlimited number of possibilities, every single game will be completely different. You will go to the same cities and the main quest-line wont change but you will never encounter the same fight twice.(according to information from Bethesda and other media) Every dragon fight will be unique and they are MASSIVE they barely fit in the screen when you're up close. IMO It will be one of Bethesda's greatest achievements.