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.

Best-selling science fiction superstars Larry Niven and Jerry Pournelle combine their talents with those of Steven Barnes in an extraordinary adventure of humankind’s first outpost in the farthest reaches of space. Light years from Earth, colonists land on a planet they name Avalon. It seems like a paradise—until native creatures savagely attack. It will take every bit of intelligence, courage, and military-style discipline to survive.

After more than two hundred years as a corpsicle, Jaybee Corbell awoke in someone else’s body and under threat of instant annihilation if he made a wrong move while they were training him for a one-way mission to the stars. But Corbell bided his time and made his own move. Once he was outbound, where the society that ruled Earth could not reach him, he headed his starship toward the galactic core.

The Mote In God's Eye is their acknowledged masterpiece, an epic novel of mankind's first encounter with alien life that transcends the genre. No lesser an authority than Robert A. Heinlein called it "possibly the finest science fiction novel I have ever read".

Fleet of Worlds takes a closer look at Human-Puppeteer (Citizen) relations and the events leading up to Niven's first Ringworld novel. Kirsten Quinn-Kovacks is among the best and brightest of her people. She gratefully serves the gentle race that rescued her ancestors from a dying starship, gave them a world, and nurtures them still. If only the Citizens knew where Kirsten's people came from.

On his way to his betrothal, young Lord Penric comes upon a riding accident with an elderly lady on the ground, her maidservant and guardsmen distraught. As he approaches to help, he discovers that the lady is a Temple divine, servant to the five gods of this world. Her avowed god is the Bastard, "master of all disasters out of season", and with her dying breath she bequeaths her mysterious powers to Penric.

Robert A. Heinlein has been hailed as one of the most forward-thinking science fiction writers of all time, and Expanded Universe (presented in two volumes) offers the perfect collection of his works to provide listeners with true insights into his uniquely creative mind.

Amber is the one real world, of which all others including our own Earth are but Shadows. Amber burns in Corwin's blood. Exiled on Shadow Earth for centuries, the prince is about to return to Amber to make a mad and desperate rush upon the throne.

Once Homo sapiens reigned supreme, spreading from star system to star system in an empire that encountered no alien life and thus knew no enemy.... save itself. As had happened many times before, the most primal human instincts rose up, only this time armed with the advanced scientific knowledge to create a genetically engineered smart virus that quickly wiped out humanity to the last man. That man is Ruslan, the sole known surviving human being in the universe.

Zachary Quinto - best known for his role as the Nimoy-approved Spock in the recent Star Trek reboot and the menacing, power-stealing serial killer, Sylar, in Heroes - brings his well-earned sci-fi credentials and simmering intensity to this audio-exclusive novella from master storyteller John Scalzi. One day, not long from now, it becomes almost impossible to murder anyone - 999 times out of a thousand, anyone who is intentionally killed comes back. How? We don't know.