Aside from House of the Dragon, set 200 years earlier and due to premiere on Aug. 21, HBO is said to be developing three more live-action prequel series set in Westeros: The Sea Snake, about the great seafarer Corlys Velaryon, who appears in House of the Dragon; Ten Thousand Ships, set 1,000 years earlier and telling the story of Princess Nymeria, who founded Dorne; and a series set just 90 years before Game of Thrones, adapted from George R. R. Martin’s Tales of Dunk and Egg novellas.
The series will be set after the events of Game of Thrones, making it the first sequel out of the no less than eight Game of Thrones spin-offs HBO has in development.
Kit Harrington is attached to return to the role HBO is in “early development” on a Game of Thrones sequel series focused on the character Jon Snow, The Hollywood Reporter reports.
The Hollywood Reporter also reckons three animated prequel series are in development, including The Golden Empire, set in the land of Yi Ti.