Realtime Interrupt

Realtime Interrupt is a 1995 science fiction novel by James P. Hogan set in a near-future Pittsburgh, Pennsylvania, United States.

It tells the story of Joe Corrigan, who awakens in a Pittsburgh hospital without memory. As director of the supersecret Oz Project, he had worked on a virtual reality software project, and as he slowly recalls his past, he sets out on a quest to pick up the pieces of his past life. He discovers that the virtual reality is still going on.

Simulated reality

 * Simulated reality