Changes in the digital landscape and interaction with information and communication technologies are changing the pattern of intellectual and cognitive development. In this respect, the task of modern education is to reconsider the traditional constructs of literacy and offer innovative pedagogical approaches that take advantage of the possibilities of new technologies. Since high school students are experienced recipients of transmedia narratives in popular culture and the world of video games, the question arises as to how the transmedia skills they possess contribute to their education. The aim of this research is to examine the transmedia literacy skills of secondary school students in the Republic of Croatia. First of all, it will be examined how students receive transmedia texts, what their reading habits are, whether they are familiar with genre division, and in what ways do they participate in the extension of transmedia narratives. Consequently, through the implementation of transmedia teaching in English language classes, it will be examined whether this method affects the development of communicative competence in a foreign language and, subsequently, whether its application is reflected in the engagement of students in the teaching process. Furthermore, the research will focus on the impact of the application of transmedia storytelling on the development of linguistic and pragmatic competence, with a special emphasis on the development of writing skills in a foreign language. The methodological approach to this research includes a theoretical and experimental part. Through the theoretical framework, the terminology related to transmedia storytelling will be analyzed and an overview of previous research on transmedia in education will be given. The experimental part of the research will be conducted through the application of transmedia teaching in the English language classroom in the second and third grades of high schools, in which six high school classes will participate. Finally, the results of this research will be compared with analyzes of transmedia literacy skills among adolescents around the world. Through comparative analysis, this research aims to contribute to a more comprehensive understanding of the role of transmedia literacy in contemporary education, while at the same time opening the door to innovative pedagogical practices and strategies for teaching literacy in secondary education in Croatia.