HBO's Game of Thrones prequel series starring Naomi Watts has reportedly been cancelled, but the company has ordered a series of House of the Dragon instead.
The newly announced prequel is co-created by A Song of Ice and Fire author George RR Martin, along with frequent Game of Thrones director Miguel Sapochnik and Ryan Condal, writer of Rampage.
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Game of Thrones: House of the Dragon will be set about 300 years before the events in the original series, which ended its eight seasons earlier this year.
The series is to be based on Fire & Blood, a spin-off book from Martin, and will tell "the story of House Targaryen and the early days of Westeros".
An HBO logline for that series was: "Only one thing is for sure: From the horrifying secrets of Westeros' 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 unnamed prequel reportedly had a pilot episode completed that endured a "lengthy post-production, which included re-editing of the initial cut after it was not well received, and rumours about issues during filming in Northern Ireland," according to Deadline.