The thesis is structured as follows: the first section provides background information on constructed languages, conlanging, and David J. Peterson's work, as well as a brief history of High Valyrian and its use in its original series Game of Thrones. The subsequent sections will provide a detailed analysis of the phonology, morphology, syntax of High Valyrian, followed by a review of these features. Finally, the conclusion summarizes the main findings of the thesis and discusses their implications for future research.