There are no spoilers in this review beyond what you’d find in the first few chapters or the cover blurb.
Cyteen was the winner of the 1989 Hugo Award. It is about neither cyborgs nor teenagers nor cyborg teenagers, despite the name; Cyteen in the name of a planet. Cyteen takes place in the same universe as Downbelow Station (which I reviewed here) in a different culture and time. Like Downbelow Station, this is a book that requires patience up front, but offers great rewards. Cyteen is 750 pages of intricate scheming and counter-scheming, supported by interesting and conflicted characters.
Cyteen is the capital planet of the Union, one of a few major political entities in a future where humans have drifted amongst numerous stars with faster-than-light travel. The economy of Union is largely supported by the production of a cloned working force called “azis”, who are psychologically trained to serve in various capacities. All azis are produced in a research lab/city called Roseune. The book opens with power struggles between the forces of Roseune, the military, and another faction. A murder follows this initial conflict, which weakens the status of Roseune and fundamentally alters the lives of the characters. The continuing power struggles are described through the individuals trying to survive them at Roseune.
My biggest complaint: the book takes too long to develop. The first 20 pages are textbook-style background. Even after that, my progress was slow. It took a while to figure out a lot of the politics, and I didn’t understand what azi were for at least a hundred pages. Additionally, it read slowly, constantly packed with intricacy and detail on each large page of text. I very much enjoyed this book, but it is not light reading. Read this one when you have a solid block of time to set aside.
I would recommend Downbelow Station over Cyteen, although I prefer the characters in Cyteen. Despite a shared universe, the styles of the two books differ substantially. Downbelow Station is a smart space opera, threaded with politics. Cyteen is a personal drama, saturated with politics. If you enjoy hard science fiction and you are patient, you will probably enjoy both of them.