Now according to a report from IGN, it seems that the series has cast its lead character in the form of actress Naomi Watts, who will be playing “a charismatic socialite hiding a dark secret”. Details about the prequel are still shrouded in mystery, but it is expected to take place in the Age of Heroes and will be based on a period known as The Long Night.
The official logline for the series reads, “Taking place thousands of years before the events of Game of Thrones, the series chronicles the world’s descent from the golden Age of Heroes into its darkest hour. And only one thing is for sure: 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 idea of a Game of Thrones prequel was mentioned a couple of years ago. The series’ author George R.R. Martin had also previously stated that he had enough material to create a prequel, where he had also stated that there were at least five different prequels that were in development (obviously not all will be chosen).