Revenge of the Computer Phantoms(1993)
(The fourth book in the Shadow Zone series)
A novel by J R Black
Mike Willis's life is transformed into a nightmare when a computer game comes to life, releasing Thor, a powerful action hero who likes life outside the computer, and a host of evil computer phantoms into the real world.
Used availability for J R Black's Revenge of the Computer Phantoms
December 1993 : USA Paperback