After getting a Ph.D. in Human-Computer Interaction, Lennart has spent more than a decade of research on digital game development, games user research, and personalized gameful design. With more than 100 conference and journal publications and a book on games user research, he is a world-renowned expert on gameful design and user experience research for games. Lennart works with clients to understand their business needs for motivating and engaging user experiences and he builds strategies for them to more effectively motivate their users.