I finished Origin the other week, such a good book. Dan Brown's brain much be an interesting world to live in, so intelligent!
Also read Artemis not long ago, a very enjoyable read, maybe even better than The Martian. Totally different though so hard to compare the two.
I'm currently reading Awaken Online. It's been a disappointing read. It was recommended if you like Ready Player One, to be along the same lines. It's no where near on par. That is one of my favourite books and hoping the film doesn't ruin it! The Book Thief is one of my all time favs.