In the 1990s, digital and virtual space was newly explored. This media upheaval sparked a critical debate that is currently being discussed in the context of simulation. But how did post-structuralist and media theoretical approaches, as well as the various manifestations of cyberpunk, benefit from the representation of virtual worlds? In addition to a systematic historical classification, Rebecca Haar presents a precise analysis of the handling of simulation and virtuality in theory, technology, and media representations in postmodern society.