- Consider reading other dark visions of the future, such as Neuromancer by William Gibson, A Clockwork Orange by Anthony Burgess, or Never Let Me Go by Kazuo Ishiguro.
- Consider reading other mind-bending literature, such as Naked Lunch by William S. Burroughs.
- Consider reading other books by Philip K. Dick, such as A Scanner Darkly or The Man in the High Castle.