This is PKD's 13th science fiction novel and he had produced Man in a High Castle a couple of years earlier and it is 10 years since he published his first novel. It is very typical PKD, it has a variety of scifi ideas rather than one of two, some bad jokes, lots of of psychiatry/psychology, drugs and a good plot. It also has a lot of one of PKD's trademarks about identity and false identity and can you trust who you are talking to. It is based around a small group of long lived, almost sterile humans who have lost the war to game playing Titans and have to play an odd form of Monopoly crossed with poker to win huge tracts of land. They are mainly infertile, humans are slowly dying out and they swap partners regularly in the hope of getting pregnant. The game involves a lot of bluffing and the Titans are telepathic, as are a small group of humans. Two plot lines are how can you get away with murder when the Titan police can read your mind to find your guilt and how can you bluff in a game where the opponents are telepathic. You will have to read it to find the answers.