Hartmut has published more than 60 research papers on the theory and practice the Interactive Digital Narrative and is the author of the main textbook of the training school. He proposed and chaired the EU COST Action INDCOR exploring complexity in Interactive Digital Narratives and developed the first training school together with fellow trainers Lissa and Jonathan. He has taught in all three previous editions of the training school. Hartmut is also the president of ARDIN (Association for Research in Digital Interactive Narratives) and a media artist.