The European project Improving Transliteracy Skills through Serious Games – TLIT4U is implemented since 2021 by three higher educational institutions (University of Library Studies and Information Technology – ULSIT, University of Parma, University of Lapland) and one non-governmental organization (Fondazione Politecnico di Milano – FPM) based in Bulgaria, Italy and Finland. The project follows the European Union agenda to foster all types of literacy as a factor for the well-being and success of citizens in their active participation in the social, cultural and public life striving for sustainable development. Henceforth, it is essential transliteracy to be established as a priority of the educational institutions. As most accessed institutions for European citizens, libraries are the natural partner of universities in this process. TLIT4U identifies serious games as the approach to engage students with transliteracy and thus expanding the collaboration between teachers and librarians. Therefore, TLIT4U seeks foremostly a development of critical information skills by going beyond the traditional approach of information literacy as the ability to search textual and bibliographic sources and asserts the urgent necessity of teaching transliteracy. Transliteracy involves skills, thinking and actions that allow for overflow and interaction in a way that is predetermined by the situational, social, cultural and technological context. This concept is based on the transfer of knowledge and skills to achieve in-depth learning and creativity, as well as to avoid fake content. The main components of transliteracy include: critical thinking, creativity, ICT/digital skills, collaboration, information skills (i.e a combination of information, digital, media, data literacy etc.), which are in the priorities of the EC, set in a number of strategic documents. Information and communication technologies are changing the way information interacts as a whole. It provides an integrative framework for unification, convergence of familiar literacy. It also provides a framework for connecting rational-emotional, analytical-creative and theoretical-practical way of thinking and working.