More like Kidnappers from the Future

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Time StormNovel
Gordon R. Dicksonstandalone novel1977
Post-apocalyptic, about survival.
“A time storm has devastated the Earth, and only a small fraction of humankind remains.”
from the catalogue
TripodsSeries
series4 books1967
completed
Post-apocalyptic and alien invasion, about rebellion and revolution.
“The first two books were the basis of a science fiction TV series, produced in the United Kingdom in the 1980s.”
from the catalogue
Start with When the Tripods Came →
H. G. Wells' War of the WorldsUniverse
universe65 books1898
Alien invasion.
“No one would have believed, in the closing years of the nineteenth century, that human affairs were being watched keenly and closely from the timeless worlds of space.”
from the catalogue
Start with The War of the Worlds →
includes The War of the Worlds
Galactic MilieuSeries
series10 books1981
completed
About psychic powers.
“From the front flap of the Knopf first printing: The year is 2051.”
from the catalogue
Start with The Many-Colored Land →
Ender's GameUniverse
universe39 books1977
Set in far future.
“To beat your enemy you must first understand him so completely that you love him — and in the instant you love him, you destroy him.”
from the catalogue
Start with Ender's Game →
includes First Formic War, Second Formic War, Ender Wiggin, Ender's Shadow, Fleet School
Childhood's EndNovel
Arthur C. Clarkestandalone novel1953
First contact, bittersweet in tone, about technological singularity and identity.