The upcoming prequel to HBO's "Game of Thrones" will explore the origins of the Targaryen dynasty starting at the time of the family's greatest power, the cast and creators told fans at the annual Comic-Con pop culture convention on Saturday. "House of the Dragon," which debuts Aug. 21, takes place 200 years before the events of "Game of Thrones," a medieval fantasy series that became a global A CANCELLED Game of Thrones prequel series starring Naomi Watts was shut down after filming a single episode and House of the Dragon was green-lit the same day as a replacement. A new Game of Thrones prequel is also planned, with author George RR Martin as EP The series is part of Warner Bros Discovery's plans for a new streaming platform called Max, which combines HBO One year after the controversial "Game of Thrones" finale episode, fans are wondering where the new books and the prequel series are. Best movies of 2023 🍿 How he writes From 'Beef' to 'The The world of Westeros is set to expand with HBO's Game of Thrones prequel series, House of the Dragon, opening its doors to a new cast of characters in 2022. 12hB.