Indeed GOG truly is great. I would probably rate it the same. Once I first got it, I was kind of overwhelmed and kind of put it off for a while, but when you start learning and getting better and better, you can't really stop playing it. I burnt many of my days off work playing this nonstop...

Great game I must say. The only issues I have is the lack of balance between magic and tech, although that can easily be fixed with a mod. Still, very well-made story and quite a lot of fun to play overall.