HBO Is Planning Another ‘Game of Thrones’ Prequel

George R. R. Martin, American novelist and short story writer, best known for his series of epic fantasy novels, A Song of Ice and Fire, which was adapted into the HBO series Game of Thrones stands at fictional Winterfell Castle in the grounds of the National Trust property, Castle Ward, where scenes from the series were filmed, before an audience with George at Castle WardÕs theatre this evening. (Photo by Liam McBurney/PA Images via Getty Images)

HBO is reportedly looking to bring another Game of Thrones prequel to our TV screens, this time adapting George R. R. Martin‘s Tales of Dunk and Egg.

Sources state that the adaptation is currently in early development. No writers or cast members have been attached to the project as of writing, but it is supposedly “a high priority” for the network as it is aiming to “build on the success” of the original eight-season series.

Tales of Dunk and Egg is set 90 years before A Song of Ice and Fire, and follows Ser Duncan the Tall (Dunk) and a young Aegon V Targaryen (Egg). Martin has written three novellas in the series, namely 1998’s The Hedge Knight, 2003’s The Sworn Sword and 2010’s The Mystery Knight.

HBO is currently producing its first Game of Thrones prequel House of the Dragon, which stars Dr. Who’s Matt Smith as Prince Daemon Targaryen, Emma D’Arcy as Princess Rhaenyra Targaryen and Olivia Cooke as Alicent Hightower. The upcoming series has a 10-episode order and is scheduled to premiere some time in 2022.