Borne Books in Order

The Borne books drop you into a ruined city where biology and technology have been pushed far past anything sensible. Years ago, a corporation known only as the Company filled the world with experimental organisms and weapons. When things fell apart, what remained was a poisoned landscape, a handful of survivors, and creatures that no longer fit into human categories.
(en.wikipedia.org)

In Borne, the story belongs to Rachel, a scavenger who survives by picking through the fur of Mord, a skyscraper-sized flying bear that terrorizes the city. One day she finds a small, sea-anemone-like organism tangled in Mord’s coat. She brings it home, names it Borne, and slowly realizes that this curious, childlike being can learn, grow, and reshape itself in ways no one understands.
(en.wikipedia.org)

Rachel lives with Wick, a former Company scientist who now trades homegrown biotech on the black market. Their fragile life together is complicated by Borne’s rapid evolution, the presence of a rival figure known as the Magician, and the lingering ghost of the Company’s failed ambitions. The book is full of mutant wildlife, living weapons, and derelict labs, but it is also a story about parenting, memory, and what it means to care for something that might outgrow you.

The Strange Bird is a companion tale that follows a lab-grown, part-avian, part-human creature who escapes into the same devastated world. Seen from her perspective, familiar landmarks and characters from Borne appear in a new light, and the story leans even more directly into questions of captivity, freedom, and how nonhuman beings navigate a human-made disaster.
(jeffvandermeer.com)

Dead Astronauts takes the setting even further. Rather than staying with one point of view, it moves across time lines and realities as three shape-shifting figures return again and again to fight the Company, trying to undo what has been done to the planet. The book is more fragmented and experimental, but it continues the sequence’s obsession with corporate power, ecological collapse, and the blurry line between person and environment.
(en.wikipedia.org)

Across the series, expect vivid biotech nightmares, moments of unexpected tenderness, and a sense that the natural world is adapting faster than any human plan. The Borne universe is messy, sad, funny, and genuinely strange, but it is also strangely hopeful about the possibilities that might come after the end of our current systems.