His research has focused on the ethics of digital games and game design. He teaches courses on game design and experimental digital play design, and was Head of Program for the IT University's GAMES MsC between 2009 and 2013. His more recent work explores the nature of play, with a particular interest in the ludic aspects of computational technologies. He is the author of The Ethics of Computer Games, Beyond Choices: The Design of Ethical Gameplay, and Play Matters (The MIT Press, 2009, 2013, 2014).