I saw it too. As mentioned, it was visually stunning with it's cool tech, the Iceland setting and the lavish living quarters. Everything was sharp and blended together so well that it didn't look or feel like CGI. And the story held my attention all the way through. I too went in not knowing anything and quite enjoyed watching the big puzzle unfold. In the end, the plot did feel a bit "put together" in that everything they wanted to throw in was made to work or fit somehow, but it was still an immensely fun ride.