Though his 1999 M.A. thesis concerned the rejection of narrative as a useful tool for understanding video games, and though Jesper Juul is often considered a ludologist, his more recent work deals with the fictional aspects of video games as well. Juul's book on video game theory, "Half-Real: Video Games Between Real Rules and Fictional Worlds" was published by MIT Press in 2005, and named by designer Ernest Adams as one of the "50 Books for Everyone in the Game Industry".