Princess Nymeria and Prince Mors Martell, artwork by Karla Ortiz
Amanda Segel is an experienced writer and producer from shows such as Without a Trace, The Good Wife, Nikita, Person of Interest, The Mist and Helstrom. HBO has tapped her to write and possibly produce/showrun Ten Thousand Ships, a Game of Thrones spin-off focusing on the historical character of Nymeria, Princess of Ny Sar. Nymeria and her people survived the destruction of their homelands along the River Rhoyne by ancient Valyria by embarking on thousands of ships and fleeing across the Summer Sea. After a lengthy voyage of many years, during which time her ships sought safety in Sothoryos, Naath and the Summer Islands, they finally arrived in Dorne in the south of Westeros, uniting that country into the southernmost of the Seven Kingdoms.
The project is one of several additional Game of Thrones spin-offs in development at HBO. Rome and Gotham showrunner Bruno Heller is developing Nine Voyages, a show about the great explorer Corlys Velaryon. HBO is also developing both Flea Bottom, set in the slums of King's Landing in an unknown historical period, and Dunk & Egg, an adaptation of a series of novellas George R.R. Martin has written or has in the planning stages. Neither of the latter projects has had a creative team attached as yet. HBO Max is also developing a potential Game of Thrones animated project.
Production is well underway on another prequel project, House of the Dragon, based on the civil war known as the Dance of the Dragons. Shooting began several weeks ago in Cornwall, and production has since moved to Warner Brothers' studio facility in Leavesden, outside London. House of the Dragon is currently scheduled to debut in early 2022.