Dothraki On Duolingo: You Can Now Learn 'Game Of Thrones' Languages On Your Phone

With the final season of the HBO hit series just days away, fans can start their High Valyrian education using the app Duolingo, which allows users to learn the language of the Seven Kingdoms.

David Peterson created both the language and the online course for the fictional tongue. He spoke to online morning show CBSN AM about how he came up with both.

"There was a little bit of the language in the books created by George R.R. Martin, but only a very little bit,' Peterson told host Vlad Duthiers.

The book 'Living Language Dothraki - A Conversational Language Course' by David J. Peterson. Image: Leonard Ortiz/Digital First Media/Orange County Register via Getty.

"There were only two phrases: 'valar morghulis' -- all men must die -- and 'valar dohaeris' -- all men must serve.

"I used those as a template, fleshed out the rest of the verbal system, the rest of the noun system, and then built on from there so you can basically have a full language you can translate."

Peterson said he has been creating languages for 10 years.

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He began making up languages as a sophomore at University of California, Berkeley where he majored in linguistics. He received a master's degree in linguistics from University of California, San Diego in 2006 and co-founded the Language Creation Society.

When HBO began production of Game of Thrones in 2009, the crew realised they needed someone to create the Dothraki language used by the nomadic warrior tribe featured in Season 1. Peterson was chosen by the show's producers and used inspiration from Russian, Turkish, Estonian and Swahili to create the fictional tongue.