Game of Thrones might be getting a second prequel. HBO is reportedly developing an hour-long series based on “Tales of Dunk and Egg” novellas — three published with plans to go up to nine in total (or more) — written by George R.R. Martin, the author of A Song of Ice and Fire books that led to Game of Thrones. Tales of Dunk and Egg follow the adventures of “Dunk” (Ser Duncan the Tall, the future Lord Commander of the Kingsguard) and “Egg” (Aegon V Targaryen, future king of Westeros). Aegon V was the father of the Mad King, grandfather to Daenerys Targaryen, and great-grandfather to Jon Snow.
HBO Max, and it's possible that it wants to use Game of Thrones to further drive up interest.
It already has cancelled after it filmed a pilot.
Unlike the latter one, Dunk & Egg has written material to base itself on. Martin published the first novella “The Hedge Knight” in 1998, with “The Sworn Sword” following in 2003, and “The Mystery Knight” in 2010. It's been quiet ever since as Martin is focused on The Winds of Winter — the massively delayed sixth book in A Song of Ice and Fire series — though he maintains he has rough outlines for two future entries (“The She-Wolves of Winterfell” and “The Village Hero”) and notes for even more (“The Sellsword”, “The Champion”, “The Kingsguard”, and “The Lord Commander”).
It's interesting that HBO is developing Dunk & Egg as a series, given Martin's earlier apprehensions over the same. Back in 2017 when five Thrones prequels were in development, Martin had said: “We're not doing Dunk & Egg. Eventually, sure, I'd love that, and so would many of you. But I've only written and published three novellas to date, and there are at least seven or eight or ten more I want to write. We all know how slow I am, and how fast a television show can move. I don't want to repeat what happened with Game of Thrones itself, where the show gets ahead of the books.”
Many agree Game of Thrones moving ahead of the books was a large contributor to its decline in later seasons, which would give some pause over HBO's new move. Of course, that depends on who is brought on board to helm Dunk & Egg.