Lagoon by Nnedi Okorafor

Something massive and alien crashes into the ocean off the coast of Nigeria. Three people, a marine biologist, a rapper, and a soldier, find themselves at the center of this presence, attempting to shepherd an alien ambassador as chaos spreads in the city. A strange novel that mixes the supernatural with the alien, shifts between many different POVs, and gives a one of a kind look at a possible first contact.

Nubia: The Awakening (Nubia series) by Omar Epps & Clarence A. Hayes

Young adult. Three teens living in the slums of an enviromentally ravaged New York find that something powerful is awakening within them. They’re all children of refugees of Nubia, a utopian African island nation that sank as the climate worsened, and realize now that their parents have been hiding aspects of their heritage from them. But as they come into their own, someone seeks to use their abilities to his own ends, against their own people.

The Scourge Between Stars by Ness Brown

Novella. After having failed at establishing a new colony, starship Calypso fights to make it back to Earth. Acting captain Jacklyn Albright is already struggling against the threats of interstellar space and impending starvation when the ship throws her a new danger: something is hiding on the ship, picking off her crew one by one in bloody, gruesome ways. A quick, excellent read if you want some good Alien vibes.

Dawn (Xenogenesis trilogy) by Octavia E. Butler*

After a devestating war leaves humanity on the brink of extinction, survivor Lilith finds herself waking up naked and alone in a strange room. She’s been rescued by the Oankali, who have arrived just in time to save the human race. But there’s a price to survival, and it might be humanity itself. Absolutely fucked up I love it I once had to drop the book mid read to stare at the ceiling and exclaim in horror at what was going on. Includes darker examinations of agency and consent, so enter with caution.

Midnight Robber by Nalo Hopkinson*

Utterly unique in world-building, story, and prose, Midnight Robber follows young Tan-Tan and her father, inhabitants of the Carribean-colonized planet of Toussaint. When her father commits a terrible crime, he’s exiled to a parallel version of the same planet, home to strange aliens and other human exiles. Tan-Tan, not wanting to lose her father, follows with him. Trapped on this new planet, he becomes her worst nightmare. Enter this book with caution, as it contains graphic child sexual abuse.

Rosewater (The Wormwood trilogy) by Tade Thompson

In Nigeria lies Rosewater, a city bordering on a strange, alien biodome. Its motives are unknown, but it’s having an undeniable effect on the surrounding life. Kaaro, former criminal and current psychic agent for the government, is one of the people changed by it. When other psychics like him begin getting killed, Kaaro must take it upon himself to find out the truth about the biodome and its intentions.

Do You Dream of Terra-Two? by Temi Oh

Young adult. A century ago, an astronomer discovered a possibly Earth-like planet. Now, a team of veteran astronauts and carefully chosen teenagers are preparing to embark on a twenty-three year trip to get there. But space is dangerous, and the team has no one to rely on but each other if - or when - something goes wrong. An introspective slowburn of a story, this focuses more on character work than action.

The Best of All Possible Worlds by Karen Lord

After the planet Sadira is left uninhabitable, its few survivors are forced to move to a new world. On Cygnus Beta, they work to rebuild their society alongside their distant relatives of the planet, while trying to preserve what remains of their culture. Focused less on hard science or action, The Best of All Possible Worlds is more about culture, romance and the ethics and practicalities of telepathy.

Mirage (Mirage duology) by Somaiya Daud

Young adult. Eighteen-year-old Amani lives on an isolated moon under the oppressive occupation of the Valthek empire. When Amani is abducted, she finds herself someplace wholly unexpected: the royal palace. As it turns out, she's nearly identical to the half-Valthek, and widely hated, princess Maram, who is in need of a body double. If Amani ever wants to make it back home or see her people freed from oppression, she will have to play her role as princess perfectly. While sci-fi, this one more has the vibe of a fantasy.

An Unkindness of Ghosts by Rivers Solomon

Life on the lower decks of the generation ship HSS Matilda is hard for Aster, an outcast even among outcasts, trying to survive in a system not dissimilar to the old antebellum South. The ship’s leaders have imposed harsh restrictions on their darker skinned people, using them as an oppressed work force as they travel toward their supposed Promised Land. But as Aster finds a link between the death of the ship’s sovereign and the suicide of her own mother, she realizes there may be a way off the ship.

Where It Rains in Color by Denise Crittendon

The planet Swazembi is a utopia of color and beauty, the most beautiful of all its citizens being the Rare Indigo. Lileala was just named Rare Indigo, but her strict yet pampered life gets upended when her beautiful skin is struck by a mysterious sickness, leaving it covered in scars and scabs. Meanwhile, voices start to whisper in Lileala's mind, bringing to the surface a past long forgotten involving her entire society.

Eacaping Exodus (Escaping Exodus duology) by Nicky Drayden

Seske is the heir to the leader of a clan living inside a gigantic, spacefaring beast, of which they frequently need to catch a new one to reside in as their presence slowly kills the beast from the inside. While I found the ending rushed with regards to plot and character, the worldbuilding is very fresh and the overall plot of survival and class struggle an interesting one. It’s also sapphic!

Chain-Gang All-Stars by Nana Kwame Adjei-Brenyah*

In a near future America, inmates on death row or with life sentences in private prisons can choose to participate in death matches for entertainment. If they survive long enough - a rare case indeed - they regain their freedom. Among these prisoners are Loretta Thurwar and Hamara "Hurricane Staxxx" Stacker, partners behind the scenes and close to the deadline of a possible release - if only they can survive for long enough. As the game continues to be stacked against them and protests mount outside, two women fight for love, freedom, and their own humanity. Chain-Gang All-Stars is bleak and unflinching as well as genuinely hopeful in its portrayal of a dark but all to real possible future.

Parable of the Sower (Earthseed duology) by Octavia E. Butler*

In a bleak future, Lauren Olamina lives with her family in a gated community, one of few still safe places in a time of chaos. When her community falls, Lauren is forced on the run. As she makes her way toward possible safety, she picks up a following of other refugees, and sows the seeds of a new ideology which may one day be the saviour of mankind. Very bleak and scarily realistic, Parable of the Sower will make you both fear for mankind and regain your hope for humanity.

Binti (Binti trilogy) by Nnedi Okorafor

Young adult novella. Binti is the first of the Himba people to be accepted into the prestigious Oomza University, the finest place of higher learning in all the galaxy. But as she embarks on her interstellar journey, the unthinkable happens: her ship is attacked by the terrifying Meduse, an alien race at war with Oomza University.

War Girls (War Girls duology) by Tochi Onyebuchi

In an enviromentally fraught future, the Nigerian civil war has flared back up, utilizing cybernetics and mechs to enhance its soldiers. Two sisters, by bond if not by blood, are separated and end up on differing sides of the struggle. Brutal and dark, with themes of dehumanization of soldiers through cybernetics that turn them into weapons, and the effect and trauma this has on them.

The Space Between Worlds (The Space Between Worlds duology) by Micaiah Johnson

Multiverse travel is finally possible, but there’s a 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. As such she has a very special job in traveling to these worlds, hoping to keep her position long enough to gain citizenship in the walled-off Wiley City, away from the wastes where she grew up. But her job is dangerous, especially when she gets on the tracks of a secret that threatens the entire multiverse. Really cool worldbuilding and characters, also featuring a sapphic lead!

The Fifth Season (The Broken Eart trilogy) by N.K. Jemisin*

In a world regularly torn apart by natural disasters, a big one finally strikes and society as we know it falls, leaving people floundering to survive in a post apocalyptic world, its secrets and past to be slowly revealed. We get to follow a mother as she races through this world to find and save her missing daughter. While mostly fantasy in genre, this series does have some sci-fi flavor, and is genuinely some of the best books I've ever read, please read them.

The Women Could Fly by Megan Giddings*

In an alternate version of our present, the witch hunt never ended. Women are constantly watched and expected to marry young so their husbands can keep an eye on them. When she was fourteen, Josephine's mother disappeared, leveling suspicions at both mother and daughter of possible witchcraft. Now, nearly a decade and a half later, Jo, in trying to finally accept her missing mother as dead, decides to follow up on a set of seemingly nonsensical instructions left in her will. Features a bisexual lead!

The Prey of Gods by Nicky Drayden

South African-set scifi featuring gods ancient and new, robots finding sentience, dik-diks, and a gay teen with mind control abilities. An ancient goddess seeks to return to her true power no matter how many humans she has to sacrifice to get there. A little bit all over the place but very creative and fresh.

The Summer Prince by Alaya Dawn Johnson*

Young adult. Young artist June Costa lives in Palmares Tres, a beautiful, matriarchal city relying heavily on tradition, one of which is the Summer King. The most recent Summer King is Enki, a bold boy and fellow artist. With him at her side, June seeks to finally find fame and recognition through her art, breaking through the generational divide of her home. But growing close to Enki is dangerous, because he, like all Summer Kings, is destined to die.

The Blood Trials (The Blood Gifted duology) by N.E. Davenport

After Ikenna's grandfather is assasinated, she is convinced that only a member of the Praetorian guard, elite soldiers, could’ve killed him. Seeking to uncover his killer, Ikenna enrolls in a dangerous trial to join the Praetorians which only a quarter of applicants survive. For Ikenna, the stakes are even higher, as she's hiding forbidden blood magic which could cost her her life. Mix of fantasy and sci-fi. While I didn’t super vibe with this one, I suspect fans of action packed romantasy will enjoy it.

Babel-17 by Samuel R. Delany

1960s classic. Rydra Wong is a space captain, linguist and poet who is set on learning to understand Babel-17, a language which is humanity's only clue at the enemy in an interstaller war. But Babel-17 is more than just a language, and studying it may change Rydra forever.

Pet (Pet duology) by Akwaeke Emezi

Young adult novella. Jam lives in a utopian future that has been freed of monsters and the systems which created and upheld them. But then she meets Pet, a dangerous creature claiming to be hunting a monster still among them, prepared to stop at nothing to find them. While I personally found the word-building in Pet lacking, it deftly handles dark subjects of what makes a human a monster.

Bonus AKA I haven’t read these yet but they seem really cool

Lion's Blood by Steven Barnes

Alternate history in which Africans colonized South America while vikings colonized the North. The vikings sell abducted Celts and Franks as slaves to the South, one of which is eleven-years-old Irish boy Aidan O'Dere, who was just bought by a Southern plantation owner.

The Sound of Stars by Alechia Dow

Young adult dystopia. Ellie lives in a future where humanity is under the control of the alien Ilori. All art is forbidden, but Ellie keeps a secret library; when one of her books disappears, she fears discovery and execution. M0Rr1S, born in a lab and raised to be emotionless, finds her library, and though he should deliver her for execution, he finds himself obsessed with human music. Together the two embark on a roadtrip which may save humanity.

Womb City by Tlotlo Tsamaase

Lelah lives in future Botswana, but despite money and fame she finds herself in an unhappy marriage, her body controlled via microchip by her husband. After burying the body of an accidental hit and run, Lelah's life gets worse when the ghost of her victim returns to enact bloody vengeance.

Orleans by Sherri L. Smith

Young adult. Fen de la Guerre, living in a quarantined Gulf Coast left devestated by storms and sickness, is forced on the run with a newborn after her tribe is attacked. Hoping to get the child to safety, Fen seeks to get to the other side of the wall, she teams up with a scientist from the outside the quarantine zone.

Everfair by Nisi Shawl

A neo-victorian alternate history, in which a part of Congo was kept safe from colonisation, becoming Everfair, a safe haven for both the people of Congo and former slaves returning from America. Here they must struggle to keep this home safe for them all.

The Splinter in the Sky by Kemi Ashing-Giwa

Space opera. Enitan just wants to live a quiet life in the aftermath of a failed war of conquest, but when her lover is killed and her sister kidnapped, she's forced to leave her plans behind to save her sister.