The 23 Best Science Fiction and Fantasy Books to Read in 2021

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  • Science fiction books are set in realities twisted by science and technology.
  • We rounded up the best sci-fi novels, from fantasy to dystopian fiction.
  • Want more books? Check out our best fantasy, thriller, horror, and true crime books.

Science fiction books are set in worlds reminiscent of our own, each with their own speculative realities twisted by science and technology. The sci-fi genre has evolved to include an array of sub-genres that feature dystopias, aliens, time travel, apocalypses, and more. Many science fiction novels also use imaginative elements reminiscent of fantasy, but differ as sci-fi explores the consequences of conceivable technological, social, and intergalactic futures.  

From classic stories criticizing technology to inspiring superhero tales, science fiction books have brought some of the greatest literary entertainment to readers. These recommendations include my personal sci-fi favorites, famed classics, and new releases receiving rave reviews from readers. 

Whether you’re interested in a parallel universe that’s eerily plausible or a time-bending civilization on a distant planet, we rounded up some of the best science fiction books.

The 23 best science fiction books: