Inside $30 million Game of Thrones spin-off that was discontinued by HBO

HBO spent almost $30 million for a Game of Thrones spin-off that never took off!

In book Tinderbox: HBO's Ruthless Pursuit of New Frontiers, author James Andrew Miller reveals that the network spent a hefty amount in the making of an untitled Game of Throne spin-off that was later discontinued.

As per the book, prominent starts from the original series has signed up to play in the new show, including Naomi Watts. The show would be directed by S.J. Clarkson.

Plot of the series revolved around thousands of years before Game of Thrones, featuring distant ancestors of noble families like the Starks and Lannisters

However, soon after the hefty spent, it was decided that HBO would instead be investing in another spin-off titled  House of the Dragon, another prequel set much closer in time to Game of Thrones about the dragon-filled civil war in House Targaryen.