The Valyrian language is a fictional language created by author George R.R. Martin for his book series, A Song of Ice and Fire. It is primarily spoken by the people of Valyria, an ancient civilization known for its dragons and advanced culture. The language has several dialects, with High Valyrian being the most prestigious and formal version. In the television adaptation, Game of Thrones, Valyrian is used to add depth to the world and its characters. The language was developed further by linguist David J. Peterson, who created a comprehensive grammar and vocabulary, allowing fans to learn and use it in various contexts.