There is good news for all Game of Thrones fans. HBO is currently developing another Game of Thrones spinoff series.

The company has officially announced a spinoff series exploring the historical event of Aegon Targaryen's conquest, which established the Seven Kingdoms of Westeros.

Last April, Variety reported that a show about Aegon Targaryen's conquest of Westeros was in early development. HBO did not comment at the time. Now months later, The Hollywood Reporter has also reported the concept, this time naming The Batman II screenwriter Mattson Tomlin as the one working on the treatment.

He also wrote the Keanu Reeves action comic adaptation BRZRKR and an animated Terminator series which he is also showrunning for Netflix.

The story of Aegon’s Conquest follows the invader Aegon Targaryen, who conquered the continent of Westeros with his sister wives, Rhaenys and Visenya, and their dragons. Aegon successfully unified six of the Seven Kingdoms in just two years, with only Dorne able to successfully resist.

An official announcement regarding the same is awaited. Ever since Game of Thrones concluded in 2019, there have been many prequels (and one sequel idea) put into development. 

HBO has also greenlit A Knight of the Seven Kingdoms: The Hedge Knight, which will follow Ser Duncan the Tall and his squire, Egg, a century before the events of the original Game of Thrones. Martin also confirmed that three animated spinoff series are in contention, as well as a Jon Snow-focused show taking place after the events of the original series.