'Game of Thrones' Prequel 'Tales of Dunk and Egg' in the Works at HBO

Another Game of Thrones prequel is in the works at HBO.

The premium cabler is in early development on Tales of Dunk and Egg, based on a set of novellas by George R.R. Martin. The stories are set about 90 years before the events of Game of Thrones and follow the exploits of Ser Duncan the Tall (Dunk) and a young Aegon V Targaryen (Egg). No writer is attached to the project at the moment.

HBO declined comment.

Fans of the franchise have clamored for a Dunk and Egg series since HBO first announced plans to develop spinoffs of its biggest series ever back in 2017. It was not, however, part of the first round of follow-ups HBO announced in 2017, and Martin himself said at the time that "we're not doing Dunk and Egg."

HBO has greenlit one prequel series, House of the Dragon, which comes from Martin and Ryan Condal. The series, slated for a 2022 premiere, is set about 300 years before Game of Thrones and will focus on the Targaryen dynasty.

A second prequel, from writer Jane Goldman and starring Naomi Watts, filmed a pilot in 2019 but was ultimately scrapped. "After careful consideration, we have decided not to move forward to series with the untitled Game of Thrones prequel," HBO said in an October 2019 statement. We thank Jane Goldman, [director] S.J. Clarkson, and the talented cast and crew for all of their hard work and dedication."

The three novellas in the Dunk and Egg series are 1998's The Hedge Knight, 2003's The Sworn Sword and 2010's The Mystery Knight. They were collected under the title A Knight of the Seven Kingdoms in 2015.

Variety first reported the news.