Mark J. P. Wolf is Professor in the Communication Department at Concordia University Wisconsin. His books include Abstracting Reality: Art, Communication, and Cognition in the Digital Age (2000), The Medium of the Video Game (2001), Virtual Morality: Morals, Ethics, and New Media (2003), The Video Game Theory Reader (2003), The Video Game Explosion: A History from PONG to PlayStation and Beyond (2007), The Video Game Theory Reader 2 (2008), Myst & Riven: The World of the D’ni (2011), Before the Crash: An Anthology of Early Video Game History (2012), the two-volume Encyclopedia of Video Games: The Culture, Technology, and Art of Gaming (2012), Building Imaginary Worlds: The Theory and History of Subcreation (2012), The Routledge Companion to Video Game Studies (2014), LEGO Studies: Examining the Building Blocks of a Transmedial Phenomenon (2014), Video Games Around the World (2015), the four-volume Video Games and Gaming Culture (2016), Revisiting Imaginary Worlds: A Subcreation Studies Anthology (2016), Video Games FAQ (2017), The World of Mister Rogers’ Neighborhood (2017), and The Routledge Companion to Imaginary Worlds (2018).