KEY POINTS
  • The cable network announces that it has ordered 10 episodes of the spinoff series based on George R. R. Martin's companion book "Fire & Blood."
  • Taking place 300 years before the events of "Game of Thrones," the series will depict the stories of the Targaryen kings who had long ruled Westeros.
  • The announcement comes shortly after reports that the cable network had scrapped another spinoff series.
Daenerys from Game of Thrones.

HBO has confirmed details of a new "Game of Thrones" prequel called "House of the Dragon."

The cable network announced Tuesday that it has ordered 10 episodes of the spinoff series based on George R. R. Martin's companion book "Fire & Blood."