HBO has given the green light to more House of the Dragon.

The streamer announced the news today, citing the Game of Thrones spin-off series audience figures: the largest for any new original series in HBO history.

The premiere, which debuted August 21, has now been seen by over 20 million viewers across linear, on demand and HBO Max platforms in the U.S., based on a combination of Nielsen data and first party data.

“We are beyond proud of what the entire House of the Dragon team has accomplished with season one. Our phenomenal cast and crew undertook a massive challenge and exceeded all expectations, delivering a show that has already established itself as must-see-TV,” said Francesca Orsi, Executive Vice President of HBO Programming in a statement in the renewal today. “A huge thank you to George, Ryan, and Miguel for leading us on this journey. We couldn’t be more excited to continue bringing to life the epic saga of House Targaryen with season two.”

Based on George R.R. Martin’s Fire & Blood, House of the Dragon is set some 200 years before the events of Game of Thrones, and tells the story of House Targaryen.

Starring are Paddy Considine, Matt Smith, Olivia Cooke, Emma D’Arcy, Steve Toussaint, Eve Best, Fabien Frankel, Sonoya Mizuno, and Rhys Ifans.

Additional cast includes Milly Alcock, Bethany Antonia, Phoebe Campbell, Emily Carey, Harry Collett, Ryan Corr, Tom Glynn-Carney, Jefferson Hall, David Horovitch, Wil Johnson, John Macmillan, Graham McTavish, Ewan Mitchell, Theo Nate, Matthew Needham, Bill Paterson, Phia Saban, Gavin Spokes, and Savannah Steyn.