Three more Game of Thrones spin-off series are currently in development at HBO.

According to Variety, the prequels are titled 9 Voyages (or Sea Snake), Flea Bottom, and 10,000 ships. While 9 Voyages (or Sea Snake) will have Bruno Heller, the co-creator of Rome, as a writer, the writers of the other two are yet to be finalised.

It is reported that 9 Voyages will center around Lord Corlys Velaryon (known as Sea Snake), who is the head of House Velaryon. He is known for his adventures across Westeros and for having the largest navy in the world. Lord Corlys is also the husband of Rhaenys Targaryen.

Flea Bottom is set to take place in the dwellings of King's Landing, and 10,000 Ships will revolve around Princess Nymeria, who journeyed with the Rhoynar to Dorne and married Lord Mors Martell.

These prequels will follow other spin-offs that were already announced, such as House of the Dragon (based on George RR Martin’s 2018 novel Fire and Blood), a series adaptation of Martin's Tales of Dunk and Egg, and an animated series based in Westeros.

HBO's hit fantasy drama Game of Thrones was based on George RR Martin’s The Song of Ice and Fire novel series. It followed the twisted tales of various kingdoms competing to conquer the Iron Throne of the magical land of Westeros.