Developed in partnership with fantasy linguist David J. Peterson, High Valyrian will expand on the language-learning app with 150 new words, HBO Max announced on Tuesday. Peterson created the language with the use of two phrases used in George R.R. Martin’s A Song of Ice and Fire books—”Valar Morghulis” (all men must die) and “Valar Dohaeris” (all men must serve). Peterson also crafted the entire Dothraki language in just six weeks.
“I am thrilled for new and old fans of the Game of Thrones series to experience the High Valyrian language. It’s been a pleasure to revisit the world of Westeros for House of the Dragon and work with the team at Duolingo to breathe new life into this course,” Peterson said in a statement.
The course features 700 new sentences directly tied to House of the Dragon. In addition, Duolingo will begin to roll out a series of ads across the U.S., testing everyone’s knowledge of High Valyrian.
While Game of Thrones had Daenerys Targaryen as one of the few characters fluent in High Valyrian, House of the Dragon will use the language more frequently. The upcoming series is a prequel that takes place 200 years before the events of Game of Thrones, telling the story of House Targaryen.
House of the Dragon stars Paddy Considine, Matt Smith, Olivia Cooke, Emma D’Arcy, Steve Toussaint, Eve Best, Sonoya Mizuno, Fabien Frankel and Rhys Ifans.