Radix Tetrad Books in Order
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The Radix Tetrad is a science fiction series by A. A. Attanasio, published between 1981 and 1989, that explores complex interactions among humans, the zōtl, Rimstalkers, and entities from other spatial dimensions and time-travel phenomena. Set across interconnected timelines and alternate realities, the series centers on enduring conflicts and speculative concepts, including temporal distortions and multidimensional forces. The narrative consistently examines the consequences of these interactions within a broader cosmology shaped by non-linear time and divergent worlds.
Publication order
In the order the books were originally released.
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Buy on Amazon1981 · A. A. Attanasio
Radix is a science fiction novel written by American author A. A. Attanasio, published in 1981 by Morrow. It was Attanasio's first science fiction…
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Buy on Amazon1985 · A. A. Attanasio
In Other Worlds is a 1985 novel by A. A. Attanasio, the second book in his Radix Tetrad series. The story includes humans, zōtl, and Rimstalkers, as…
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Buy on Amazon1989 · A. A. Attanasio
The Last Legends of Earth is a 1989 science fiction novel by A. A. Attanasio, the final book in his Radix Tetrad series. It continues the series'…
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Frequently asked questions
What order should I read the Radix Tetrad books in?
Read them in publication order, starting with “Radix”. Start with “Radix.”
How many books are in the Radix Tetrad series?
We list 3 books by A. A. Attanasio , published between 1981–1989.
Where can I buy the Radix Tetrad books?
Each title above links to Amazon. See our affiliate disclosure.
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Reading order compiled from author/publisher guidance and verified bibliographic data. Spotted a wrong order, a missing book, or any other mistake? and we'll correct it.