I watched the first episode last night and was disappointed. The characters lacked depth, none of them managed to create an emotional connection with me. I might have been the acting: I was seeing actors, not characters.

There was something with the CGI. Mist and whispy clouds all over the place, but too prominent and too artificial. Brick walls that looked like texture-maps, it all somehow felt not quite right. The dragons where impressive, until taking flight. I appreciate it is difficult to model a flying dragon correctly, but the tail of the dragon in flight seemed to have nu problem with air resistance during flight and the movement of it's back during take off would have thrown any human of its back right away.

I could specify more aspects of this episode that dissapointed but overall, it felt cheaper, it lacked the deep, immersive quality of Game of Thrones.