HBO. The “ Game of Thrones ” prequel series “House of the Dragon” at HBO has unveiled its first official images. “House of the Dragon” is set a few hundred years prior to the events of House of the Dragon: little by little, we’re starting to learn more about the series. Jane Goldman’s prequel based on eight lines of text in George RR Martin’s books, which was turned While “House of the Dragon” was able to wrap filming on Season 2 during the strikes, as the scripts were already complete and the production is under a U.K. union contract. The House of the Dragon is finally under construction. HBO has revealed that the straight-to-series Game of Thrones prequel from George R.R. Martin, Ryan Condal and Miguel Sapochnik, is now in prod… EXpP.