I have two I can recommend myself, both SF/fantasy-ish (for want of a better label); please suggest some yourselves!
[1.] Adrian Tchaikovsky’s Cage of Souls; the publisher’s summary actually captures it well:
The sun is bloated, diseased, dying perhaps. Beneath its baneful light, Shadrapar, last of all cities, harbours fewer than 100,000 human souls. Built on the ruins of countless civilisations, Shadrapar is a museum, a midden, an asylum, a prison on a world that is ever more alien to humanity.
Bearing witness to the desperate struggle for existence between life old and new is Stefan Advani: rebel, outlaw, prisoner, survivor. This is his testament, an account of the journey that took him into the blazing desolation of the western deserts; that transported him east down the river and imprisoned him in the verdant hell of the jungle’s darkest heart; that led him deep into the labyrinths and caverns of the underworld. He will meet with monsters, madman, mutants.
The question is, which one of them will inherit this Earth?
I listened to the audiobook version, and enjoyed it very much; I expect I’d have enjoyed the book as much.
[2.] Micaiah Johnson’s Space Between Worlds:
Multiverse travel is finally possible, but there’s just one catch: No one can visit a world where their counterpart is still alive. Enter Cara, whose parallel selves happen to be exceptionally good at dying—from disease, turf wars, or vendettas they couldn’t outrun. Cara’s life has been cut short on 372 worlds in total.
On this dystopian Earth, however, Cara has survived. Identified as an outlier and therefore a perfect candidate for multiverse travel, Cara is plucked from the dirt of the wastelands. Now what once made her marginalized has finally become an unexpected source of power. She has a nice apartment on the lower levels of the wealthy and walled-off Wiley City. She works—and shamelessly flirts—with her enticing yet aloof handler, Dell, as the two women collect off-world data for the Eldridge Institute. She even occasionally leaves the city to visit her family in the wastes, though she struggles to feel at home in either place. So long as she can keep her head down and avoid trouble, Cara is on a sure path to citizenship and security.
But trouble finds Cara when one of her eight remaining doppelgängers dies under mysterious circumstances, plunging her into a new world with an old secret. What she discovers will connect her past and her future in ways she could have never imagined—and reveal her own role in a plot that endangers not just her world but the entire multiverse.
This one I read, and also liked very much. What can you recommend?