I really liked this book. I loved the world building and i think that's the real protagonist in this story. The characters were fine, but the world building was amazing. As i said, I really think that the #Railsea is the protagonist. The characters show us the captain's obsession, Sham's dream, the world's ambition... But all of that revolves around the railsea. I don't know, i really loved the concept and it was pretty original to me 💗