The Fantasy Review‘s list of 6 Fantastic Science Fiction Trilogies.
The Final Architecture by Adrian Tchaikovsky
From the blurb of book 1:
The war is over. Its heroes forgotten. Until one chance discovery . . .
Idris has neither aged nor slept since they remade him in the war. And one of humanity’s heroes now scrapes by on a freelance salvage vessel, to avoid the attention of greater powers.
After earth was destroyed, mankind created a fighting elite to save their species, enhanced humans such as Idris. In the silence of space they could communicate, mind-to-mind, with the enemy. Then their alien aggressors, the Architects, simply disappeared—and Idris and his kind became obsolete.…
The Sprawl trilogy by William Gibson
From the blurb of book 1:
Case was the sharpest data-thief in the matrix—until he crossed the wrong people and they crippled his nervous system, banishing him from cyberspace. Now a mysterious new employer has recruited him for a last-chance run at an unthinkably powerful artificial intelligence. With a dead man riding shotgun and Molly, a mirror-eyed street-samurai, to watch his back, Case is ready for the adventure that upped the ante on an entire genre of fiction.
The Heartland Trilogy by Chuck Wendig
From the blurb of book 1:
Fear the Corn….
Corn is king in the Heartland, and Cael McAvoy has had enough of it. It’s the only crop the Empyrean government allows the people of the Heartland to grow―and the genetically modified strain is so aggressive that it takes everything the Heartlanders have just to control it. As captain of the Big Sky Scavengers, Cael and his crew sail their rickety ship over the corn day after day, scavenging for valuables. But Cael’s tired of surviving life on the ground while the Empyrean elite drift by above in their extravagant sky flotillas.…
Imperial Radch Series by Ann Leckie
From the blurb of book 1:
On a remote, icy planet, the soldier known as Breq is drawing closer to completing her quest.
Once, she was the Justice of Toren—a colossal starship with an artificial intelligence linking thousands of soldiers in the service of the Radch, the empire that conquered the galaxy.
Now, an act of treachery has ripped it all away, leaving her with one fragile human body, unanswered questions, and a burning desire for vengeance.
The Original Foundation Trilogy by Isaac Asimov
From the blurb of book 1:
For twelve thousand years the Galactic Empire has ruled supreme. Now it is dying. But only Hari Seldon, creator of the revolutionary science of psychohistory, can see into the future—to a dark age of ignorance, barbarism, and warfare that will last thirty thousand years. To preserve knowledge and save humankind, Seldon gathers the best minds in the Empire—both scientists and scholars—and brings them to a bleak planet at the edge of the galaxy to serve as a beacon of hope for future generations. He calls his sanctuary the Foundation.…
The Great Dune Trilogy by Frank Herbert
From the blurb of book 1:
Melange, or ‘spice’, is the most valuable – and rarest – element in the universe; a drug that does everything from increasing a person’s life-span to making intersteller travel possible. And it can only be found on a single planet: the inhospitable desert world Arrakis.
Whoever controls Arrakis controls the spice. And whoever controls the spice controls the universe.
When the Emperor transfers stewardship of Arrakis from the noble House Harkonnen to House Atreides, the Harkonnens fight back, murdering Duke Leto Atreides. Paul, his son, and Lady Jessica, his concubine, flee into the desert….
