In the Game of Thrones universe, Aegons are everywhere. A highly anticipated plot twist in Game of Thrones revealed Jon Snow wasn’t Eddard Stark’s bastard son—instead, he was secretly the son of the Mad King Rhaegar and Lyanna Stark. House of the Dragon later introduced another Aegon, the son of King Jaehaerys and Queen Alicent. Finally, A Knight of the Seven Kingdoms disclosed its bald squire Egg was in fact the future King Aegon V.
But where did this line of Aegons start? The answer lies in one of Westeros’s most mythic historical tales—a saga that could become the first-ever Game of Thrones movie adaptation.
A overlooked detail from January’s George R.R. Martin profile is gaining fresh notice: a theatrical film take on a previously announced in-development series. Back in 2024, The Hollywood Reporter reported that a future Game of Thrones spinoff would chronicle Aegon’s Conquest—the full subjugation of Westeros by Aegon the Conqueror and his two sister-wives, Rhaenys and Visenya—and would be showrun by Mattson Tomlin, known for The Batman Part II.
Given how many Game of Thrones spinoffs have been scrapped over the years, many thought Aegon’s Conquest would meet the same end. But development appears to be moving forward; Tomlin recently shared a collection of ideas on social media.
But this Martin profile suggests those ideas could lead to something far larger. The piece states the untitled Aegon’s Conquest project is “being developed by HBO as a potential drama series and by the Warner Bros. film team as a mammoth Dune-sized feature film.”
Aegon’s Conquest draws clear parallels to Dune: it’s an ancient tale with a mythic framework, set in a distinct world, and features heroes riding enormous creatures—though these are dragons, not sandworms. But can this project draw an audience as large as Dune’s? A Knight of the Seven Kingdoms recently confirmed there’s demand for more diverse Game of Thrones content, but unlike that spinoff, a Conquest adaptation would need a scope bigger than any Game of Thrones project before it—encompassing the entire Westeros we know.
Perhaps that expanded scope is why a theatrical release makes sense. Since this is Westeros’s ancient history and the event that lays the groundwork for both House of the Dragon and Game of Thrones, it merits the largest screen available—even if that means heading to your local Raegal or AeMC cineplex.