In Game of throne a Dothraki tribe is shown with an unknown language. Actually this language was given birth by Linguist David Peterson to suit the show. He created this language by using 30 words of Dothraki language which were first used by George R. R. Martin in his book. David Peterson expanded these 30 words to 3163 words. This language was not used in the show on major scale but David Peterson created the rules of the spoken version of this language, grammar and even the syntax so when the language is used in the show must not look artificial.