Here’s everything we know about the new ‘Game of Thrones’ spinoff prequel series

What might be covered?

In Martin’s novels, the Age of Heroes is a period of history after the Dawn Age, in which the First Men crossed the land bridge into Westeros and came into contact with the illusive Children of the Forest, according to the fan-powered .

The Age of Heroes officially began when the First Men and the Children of the Forest signed a peace deal, after many centuries of conflict, in order to unite behind the task of defeating the White Walkers.

This battle against the White Walkers is known as the Long Night and ended with the terrifying frozen creatures being driven back to the far north and the Wall being built to keep them out.

Many great and legendary heroes lived in this time, and could very well feature in the show, including founder of House Stark Bran the Builder, who is said to have constructed the Wall and Winterfell.

Lann the Clever, the founder of House Lannister, was also around during the Age of Heroes.

Who’s writing it?

The show will be co-created by George RR Martin and screenwriter Jane Goldman, who will act as showrunner.

Goldman’s credits include the Kingsman films, X-Men: First Class and The Woman in Black.

Goldman spoke to Digital Spy about the upcoming show, saying: “I am just writing ideas and outlining some things. I really can’t say very much about it, but yeah, it’s all going well. I’m having lots of fun making stuff up!”

Asked whether it’ll feature her signature humour and love of gore, she added: “I don’t know if I’m allowed to say, but I would say yeah! Those are things I love, and things I like to do. It would be remiss of me not to put them in. So yeah.”

Interestingly, and not that in matters in any way, but Goldman is also married to comedian and TV personality . There you go.

Game of Thrones showrunners David Benioff and Dan Weiss have chosen to not be involved and are instead working on a new series of Star Wars films.

When is it coming?

HBO’s progamming president has Casey Bloys previously said that the first show will not air until at least a year after the main show ends. So this means the earliest we could see it is 2020.

How much will it cost?

HBO executives have said they’re willing to throw more than $50m at each new season.