If you were fascinated by how Diaspora dives into post-human existence, digital minds, and the boundaries of consciousness, you'll be gripped by Blindsight. Watts brings together a crew of heavily augmented humans and transhumans to investigate a mysterious alien artifact, delving into hard scientific concepts about perception, identity, and the limits of sentience. The novel's commitment to scientific plausibility and its intense, cerebral approach to first contact will scratch the same itch for rigorous, mind-bending science fiction.

Diaspora's sweeping timescale and the breathtaking journey through countless epochs and forms of existence are mirrored in The Book of the New Sun. Wolfe weaves an epic tale of Severian, an exiled torturer, across a dying Earth. The story spans immense distances and eras, brimming with lost technologies and civilizations. The sense of epic scale, both in setting and the evolution of humanity, will be deeply familiar and rewarding.

If you loved Diaspora for its bold, mind-expanding ideas about identity, reality, and digital consciousness, Permutation City will be right up your alley. Egan crafts a narrative around self-aware copies of people living in virtual realities, probing questions about what it means to be real, the nature of the self, and whether consciousness can exist independent of physical substrate. The philosophical depth and radical concepts will challenge and intrigue you.

If the rich, imaginative rendering of non-human societies and post-biological entities in Diaspora captivated you, The Algebraist offers a sprawling vision of interstellar cultures. Banks introduces the Dwellers, ancient and enigmatic gas-giant inhabitants, alongside a vast array of posthuman societies. The book’s intricate worldbuilding and deep dive into truly alien perspectives will satisfy your craving for the exploration of otherness.

If one of the highlights of Diaspora for you was the meticulous, awe-inspiring construction of a future filled with digital minds, exotic physics, and sprawling civilizations, then Revelation Space will draw you in. Reynolds builds an intricately detailed universe where ancient mysteries, technological marvels, and diverse cultures intersect, all rendered with a scientist’s precision and a storyteller’s flair.