Great Science-Fiction Series
Explore the best Great Science-Fiction Series with our curated list of top book picks. Dive into epic adventures, futuristic worlds, and must-read sci-fi sagas for fans of all ages.

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Triplanetary
by Edward Elmer Smith
From the atomic age in Atlantis to the far-flung future, here is a story of interstellar war with Earth as the prize for the victor. The elder race of our galaxy, the Arisians, using advanced mental science, has foreseen the invasion of our universe by the evil Eddorians. The Arisians begin a breeding program on every world that can produce intelligent life, the goal to produce super warriors who can repel the Eddorians. Triplanetary is the early history of that breeding program on Earth, illustrated with the lives of several warriors and soldiers. It ends with the discovery of the interstellar space drive, formation of the Galactic Patrol, and the first Lens-an Arisian device that provides its wearer with mind-reading and telepathic abilities-given to the first Lensman on Earth.

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The Green Hills of Earth
by Robert Anson Heinlein
As man expands his technological empire to the moon and Venus, the obsolescence of his economic and military institutions becomes apparent.

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The Demon Princes, Vol. 1
by Jack Vance
Kirth Gersen, his family and home planet destroyed in the Mount Pleasant Massacre, sets out on a mission of revenge to find and eliminate the five Demon Princes responsible.

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Starhammer
by Christopher B. Rowley
The universe is dominated by the Laowan Imperium, aliens who use humans as slaves and pets. One day Jon Iehard, a former slave, is charged with hunting a terrorist who holds half the key to a weapon capable of destroying the Laowan empire.

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Three Books of Known Space
by Larry Niven
Let three complete books in one take you on a dazzling journey into science fiction's most famous future history: Known Space! World of Ptavvs Kzanol was a thrint from a distant galaxy. He had been trapped on Earth in a time-stasis field for two billion years. Now he was on the loose, and telepath Larry Greenberg knew everything he was thinking. Thrints lived to plunder and enslave lesser planets . . . and the planet Kzanol had in mind was Earth! A Gift from Earth Shrouded in lethal mists, the world named Mount Lookitthat was never meant for humans. Life existed only on one plateau, unreachable except from space. But still the planet had been colonized, and the settlers struggled to survive under a ruthless dictatorship on a rebellion-proof world . . . until fate dealt them a wild card named Matthew Keller, whose secret talent might just be their only hope! Tales of Known Space A classic collection of stories that traces humankind's expansion and colonization throughout the galaxy from the twentieth century to the thirty-first . . . And more: Larry Niven's latest thoughts on the evolution—both creative and “historical”—of known space, as well as an updated Timeline of Known Space and a complete Niven bibliography!

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The Man-Kzin Wars
by Larry Niven
An unarmed human vessel was set upon by a warship from the planet Kzin, home of the fiercest warriors in Known Space. This was a mistake. Kzinti learned the hard way that the reason humanity decided to stop studying war was because they were so very good at it.