HBO is working on three more Game of Thrones spinoff projects, The Hollywood Reporter has confirmed. The trio of prequels will explore and expand stories based on author George R.R. Martin’s fantasy universe. 

The first project has the working title of 9 Voyages and is being developed by Rome creator Bruno Heller. It will follow Lord Corlys Velaryon (a.k.a. The Sea Snake), the Lord of the Tides and head of House Velaryon. The character is also featured in the upcoming GoT prequel House of the Dragon, where he’s played by Steve Toussaint – meaning this could be a spinoff of a spinoff series that hasn’t even been filmed yet. 

The second project, which has the working title of 10,000 Ships, will focus on the warrior queen Princess Nymeria, a respected ancestor of House Martell who established the kingdom of Dorne. The events of the spinoff will take place about 1,000 years before the stories in Game of Thrones, making it the oldest narrative on the Westeros timeline out of the projects announced so far.

Finally, the still-unnamed third project will be set in the King’s Landing slum of Flea Bottom, a low-class area where known characters like Davos Seaworth and Gendry Baratheon were born.

House of the Dragon is set to begin filming in the U.K. in April and is expected to premiere in 2022. It will tell the story of House Targaryen 300 years before the events in Game of Thrones, building to a civil war that wrecked Westeros. The series is from co-showrunners Miguel Sapochnik and Ryan Condal and stars Olivia Cookie, Emma D’Arcy, Paddy Considine, and Matt Smith. 

Other HBO projects are being reportedly developed, including one based on Martin’s Dunk and Egg novellas, which follows Ser Duncan the Tall and his squire Egg, who would become King Aegon V Targaryen. Another idea being considered is an animated GoT project about an unrevealed theme. 

HBO seems to be eager to follow up the massively popular show, especially with the launch of their streaming platform HBO Max. Meanwhile, Martin is still working on The Winds of Winter, the long-awaited sixth book in the A Song of Ice and Fire series on which Game of Thrones was based.