As Cluster opens, the alien envoy Pnotl of Sphere Knyfh seeks help from Sphere Sol in a shared galactic-level crisis: Galaxy Andromeda has discovered the secret of energy transfer and intends to use it to steal the basic energy of the Milky Way Galaxy.

Knyfh offers the secret of aura transfer on the understanding that Sphere Sol will spread the technology to help create a galactic coalition to find and defeat agents of Andromeda.

In February 1989, science fiction writer Piers Anthony, author of the Xanth series, received a moving letter. It came from a woman whose daughter, Jenny, was in a coma as a result of severe injuries caused by a drunk driver. She asked Anthony to write to Jenny, an avid fan of his, in the hope that a letter from him would evoke some response. Her request resulted in a series of warm, supportive, and humorous letters written weekly from Anthony to Jenny. These were read to the patient by her mother.

The Kingdom of Rud languishes under the heel of a usurper; an evil sorcerer has taken the throne in the name of his wicked daughter. Even deep in the forest, away from all power, the people tremble and await the day of prophecy's fulfillment. It cannot come too soon: Charlain and her children are soon to lose their home to the tax collector.

In this, the first novel of the best-selling Incarnations of Immortality series, Piers Anthony combines a deeply moving examination of the meaning of life and death with a gripping story of romance and loyalty, all set in a world of magic and technical wizardry.

On the technological, decadent world of Proton, someone was trying to destroy Stile, serf and master Gamesman. His only escape lay in Phaze, a world totally ruled by magic. Soon he learned that his alternate self had already been murdered, and that he was next. On Proton, his fate depended on winning the great Games. On Phaze, he must master magic to survive. And if he used any magic at all, his friends were determined to kill him at once!

A Fire Upon the Deep is the big, breakout book that fulfills the promise of Vinge's career to date: a gripping tale of galactic war told on a cosmic scale. Thousands of years hence, many races inhabit a universe where a mind's potential is determined by its location in space, from superintelligent entities in the Transcend, to the limited minds of the Unthinking Depths, where only simple creatures and technology can function.

At last, one of the world’s greatest works of science fiction is available - just as author Stanislaw Lem intended it. To mark the 50th anniversary of the publication of Solaris, Audible, in cooperation with the Lem Estate, has commissioned a brand-new translation - complete for the first time, and the first ever directly from the original Polish to English. Beautifully narrated by Alessandro Juliani ( Battlestar Galactica), Lem’s provocative novel comes alive for a new generation.

For three days battle has raged in the snow around the great city of Tar Valon. In the city, a foretelling of the future is uttered. On the slopes of Dragonmount, the immense mountain that looms over the city, a child is born, an infant prophesied to change the world. That child must be found before he can be killed by the forces of the Shadow.

This latest installment in New York Times best-selling author R.A. Salvatore's beloved fantasy saga, The Companions moves Salvatore's signature hero Drizzt into a new era of the Forgotten Realms. As Drizzt's fate hangs in the balance, he reflects on the lives of the trusted allies who stood by his side throughout his early life - the friends now known as the Companions of the Hall. Meanwhile, the first stirrings of the Sundering begin.

It was January 2021, and Rick Deckard had a license to kill. Somewhere among the hordes of humans out there lurked several rogue androids. Deckard's assignment: find them and then..."retire" them. Trouble was, the androids all looked exactly like humans, and they didn't want to be found!

In what is considered one of Heinlein's most hair-raising, thought-provoking, and outrageous adventures, the master of modern science fiction tells the strange story of an even stranger world. It is 21st-century Luna, a harsh penal colony where a revolt is plotted between a bashful computer and a ragtag collection of maverick humans, a revolt that goes beautifully until the inevitable happens. But that's the problem with the inevitable: it always happens.

This classic science fiction masterwork by Isaac Asimov weaves stories about robots, humanity, and the deep questions of existence into a novel of shocking intelligence and heart.

Welcome to Ringworld, an intermediate step between Dyson Spheres and planets. The gravitational force created by a rotation on its axis of 770 miles per second means no need for a roof. Walls 1,000 miles high at each rim will let in the sun and prevent much air from escaping. Larry Niven's novel, Ringworld, is the winner of the 1970 Hugo Award for Best Novel, the 1970 Nebula Award for Best Novel, and the 1972 Ditmars, an Australian award for Best International Science Fiction.

It is one of the most well-known and well-loved fantasy epics of the twentieth century: the story of Elric, emperor of the dying kingdom of Melniboné. For a hundred centuries the Melnibonéans have ruled from the Dragon Isle of Imrryr. Now, after years of corruption and decadence, Elric’s amoral cousin Prince Yyrkoon, the brother of his beloved Cymoril, sets his eyes on the Ruby Throne. Elric must face his treacherous cousin not as a warrior but as a sorcerer king once again in league with the ancient gods of Melniboné, the Chaos Lords, and thus sealing his inexorable fate.

At first, only a few things are known about the celestial object that astronomers dub Rama. It is huge, weighing more than ten trillion tons. And it is hurtling through the solar system at inconceivable speed. Then a space probe confirms the unthinkable: Rama is no natural object. It is, incredibly, an interstellar spacecraft. Space explorers and planet-bound scientists alike prepare for mankind's first encounter with alien intelligence.

Though he was later accused of every crime and sexual perversion in the galaxy, Hope Hubris began as an innocent. Because he defended his older sister against the violent lusts of a wealthy scion, Hope and his peasant family were forced to flee Callisto, one of the moons of Jupiter. Pursued by the bloodthirsty scions across the airless desert, they barely escaped with their lives. The illegal space bubble was overcrowded with refugees, all hoping to reach Jupiter for asylum.

On the technological, decadent world of Proton, someone was trying to destroy Stile, serf and master Gamesman. His only escape lay in Phaze, a world totally ruled by magic. Soon he learned that his alternate self had already been murdered, and that he was next. On Proton, his fate depended on winning the great Games. On Phaze, he must master magic to survive. And if he used any magic at all, his friends were determined to kill him at once!

In this, the first novel of the best-selling Incarnations of Immortality series, Piers Anthony combines a deeply moving examination of the meaning of life and death with a gripping story of romance and loyalty, all set in a world of magic and technical wizardry.

Colene does not know what to think of the stranger she has rescued. Darius tells her he has traveled from "his reality" to find her. In proving to Colene that other worlds do exist, he uses up the power of the artifact that would allow them to travel back to his universe.

After a youth spent trapped in space exile, Jeff Font returned to Earth to seek vengeance against the planetary mogul who had framed and destroyed his family. Jeff's plans backfired: He was captured, drugged, rammed through a computerized court system, convicted... and ringed.