The best new science fiction books of May 2025

Bora Chung's Red Sword is set on a disputed planet While there are no big names publishing new science fiction novels this May, there are some real gems nonetheless – including a big tip from me, Grace Chan's near-future Every Version of You. I want to press it into the hands of everyone I know. There are also two fascinating sci-fi-edged thrillers out this month, by Adam Oyebanji and Barnaby Martin, while Catherine Chidgey's creepy The Book of Guilt has intrigued me enough to make it my next read – if it's not ousted by Bora Chung's real history-inspired story of war on an alien planet, Red Sword, that is… Set in late-21st-century Australia, this novel (published in Australia in 2022 but out now more widely) follows Tao-Yi in a world where most people spend their lives in an immersive virtual reality called Gaia. Every morning, she climbs into a pod in her apartment to enter Gaia, where she works and socialises. In the real world, the unrelenting heat of the sun means there are no trees left and hardly any animals: this is a terrifying vision of the future.