Step 1 : Introduction to the question "Which language is commonly spoken in “Game of Thrones”?"
High Valyrian is a fictional language spoken in the television drama “Game of Thrones”. For the TV series, linguist David J. Peterson created the High Valyrian language from scratch, complete with grammar and rules. Peterson also created Dothraki, which is another fictional language heard throughout "Game of Thrones". More than 1.2 million “Game of Thrones” fans have signed up to learn High Valyrian, which is more people than can speak traditional languages like Irish and Scottish Gaelic. Valyrian and Dothraki have been described as "the most convincing fictional tongues since Elvish".