Game of Thrones may have ended, but fans shouldn't get too upset — the first of many spinoffs is already on its way. Back in 2017, around the time of Game of Thrones season seven, HBO teased "zero to five" potential spin-off series.

Now we know that at least three, possibly four, of those potential shows are still in development, according to author George R.R. Martin. Jane Goldman (Kingsman), Max Borenstein (Kong: Skull Island), Brian Helgeland (L.A. Confidential), and Carly Wray (Mad Men) are helming each project, but Goldman's is the first out of the blocks. In fact, filming has already begun in Belfast, Northern Ireland, which is where much of Game of Thrones was shot.

We'll be collecting everything there is to know about the Game of Thrones prequel series, including the cast, story, release date, and trailers. Keep checking back for updates, and in the meantime read all of the information we have so far.

What is the name of the Game of Thrones prequel?

The prequel has been referred to as The Long Night by Martin, but its working title during filming is reportedly Bloodmoon. The author's preferred title might no longer be a possibility because the third episode of Game of Thrones season eight was also titled “The Long Night.” However, Martin has revealed that a similar title might be considered, saying, “I heard a suggestion that it could be called The Longest Night, which is a variant I wouldn’t mind. That would be pretty good.”

What is the Game of Thrones prequel release date?

As of yet, there is no release date. However, as filming has only recently begun, it's safe to say it won't premiere earlier than 2020. More likely, the Game of Thrones prequel series will land in 2021.

Who has been cast in the Game of Thrones prequel?

Oscar nominee Naomi Watts was the first cast member to be announced and will star alongside Josh Whitehouse (Poldark). Joining them is an impressive cast, including Jamie Campbell Bower (Fantastic Beasts: The Crimes of Grindelwald, The Twilight Saga), Toby Regbo (Fantastic Beasts: The Crimes of Grindelwald), Georgie Henley (The Chronicles of Narnia), Ivanno Jeremiah (Black Mirror), Naomi Ackie (Star Wars: The Rise of Skywalker), Denise Gough (Colette), Sheila Atim (Harlots), and Alex Sharp (To the Bone).

The most recent cast additions include some familiar faces: Miranda Richardson (Harry Potter), Marquis Rodriquez (Iron Fist), John Simm (Doctor Who), Richard McCabe (Collateral), John Heffernan (Collateral), and Dixie Egerickx (The Secret Garden remake).

The Game of Thrones prequel synopsis

We don't know much yet about the plot. However, it will be set around 5,000 years before the events of Game of Thrones, so don't expect to see any familiar faces — or dragons for that matter.

HBO's official synopsis reveals that the series "chronicles the world’s descent from the Golden Age of Heroes into its darkest hour," and that "from the horrifying secrets of Westeros’s history to the true origin of the White Walkers, the mysteries of the East to the Starks of legend… it’s not the story we think we know."

The network has also said that Watts' character is a "charismatic socialite hiding a dark secret."

There will be roughly 100 Westerosi kingdoms in the Game of Thrones prequel series

As we're going so far back in time, Westeros will be much more chaotic and divided. “We talk about the Seven Kingdoms of Westeros; there were Seven Kingdoms at the time of Aegon’s Conquest,” Martin explained in July 2019. “But if you go back further then there are nine kingdoms, and 12 kingdoms, and eventually you get back to where there are a hundred kingdoms — petty kingdoms — and that’s the era we’re talking about here.”

There will also be direwolves, Starks, and White Walkers, too

The direwolves, sigil of House Stark, will definitely make an appearance in the prequel. Our favorite Northern family will also be there, too, Martin confirms. And we can also expect to see more fantastical creatures. "Obviously the White Walkers are here — or as they’re called in my books, The Others — and that will be an aspect of it,” Martin said. “There are things like direwolves and mammoths."

But don't expect to see the Lannister family

“The Lannisters aren’t there yet, but Castlery Rock is certainly there,” Martin explained. “It’s actually occupied by the Casterlys — for whom it’s still named after in the time of Game of Thrones.” It's unclear whether the Casterlys' storyline will include Lann the Clever, who founded House Lannister, and how he became lord of Casterly Rock.

Is there a Game of Thrones prequel book?

The prequel series will not be based solely on George R.R. Martin's novels, as Game of Thrones was. However, Martin did tease fans, telling them they should "pick up a copy of Fire and Blood and come up with your own theories." Fire and Blood is a 736-page companion novel to the A Song of Ice and Fire series and is written in the style of a textbook about the history of Westeros.

The Game of Thrones prequel trailer

As filming has only recently begun, there are no trailers yet. They will be added as soon as they're available.

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