George R.R. Martin's 'Nightflyers' Brings ' Game of Thrones ' World-Building Skills Into Space. Fire Wars and ancient aliens are on their way to. To be clear I love The Expanse as much as I love Game of Thrones. The Expanse is a space opera, mystery-sci-fi drama television series. Based on the novels by James S.A. Corey, the series has long been touted as “ Game of Thrones ” in space. Even George R.R. Martin himself. Besides the Epic scope and the other things people are pointing out in the discussion Please support the books and the show by consuming it through legal means. I don't think they've ever said what the actual budget is. Close friends drift apart or betray each. Plus the quote on the cover of the first book probably helped. Emilia Clarke Fires Back At Critics Who Say Game Of Thrones Is Sexist.