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Two humans and two aliens, who are traveling to distant reaches of space to prevent a future catastrophe, crash on a ringworld apparently created by superior technologies.

"Avalon was thriving. The cold sleep colonists from Earth had settled on a verdant, livable world. The fast and cunning predators humans named "grendels" were under control, and the mainland outposts well established. Avalon's new mainland hydroelectric power station was nearly c...

A brand-new novel set in Niven's Known Space, two hundred years before the discovery of the Ringworld.

"The two hundred colonists on board the Geographic have spent a century in cold sleep to arrive here: Avalon, a lush, verdant planet light-years from Earth. They hope to establish a permanent colony, and Avalon seems the perfect place. And so they set about planting and building ...

Presents a collection of short stories set in such fan-favorite universes as "Ender's Game," "Dune," and the "Honor Harrington" universe.

A human expedition to another star system is jeopardized by the discovery of an immense bowl-shaped structure in space that leads to hostile alien encounters and profound revelations about humanity's place in the universe.

Having fled a solar system threatened by too much nanotechnology and rife with political dangers, a starship misses its intended target and ends up in an environmentally hostile galaxy. Can the passengers succeed in creating a temporary home?

Bowl of heaven: A human expedition to another star system is jeopardized by the discovery of an immense bowl-shaped structure in space that leads to hostile alien encounters and profound revelations about humanity's place in the universe.

In the 28th Century, a war breaks out on Ringworld, a conglomeration of nations and cultures occupying 600 million miles of space. The hero is Louis Wu, a 200-year-old human scientist attempting to mediate the conflict.

A tale set ten years after the events in "Juggler of Worlds" traces the reluctant efforts of the Puppeteers to counter onrushing alien refugees who are ransacking the planets they pass on their way toward the Fleet of Worlds.

"Audacious astronauts encounter bizarre, sometimes deadly life forms, and strange, exotic, cosmic phenomena, including miniature black holes, dense fields of interstellar plasma, powerful gravity-emitters, and spectacularly massive space-based, alien-built labyrinths. Tasked with...

Twenty-five years earlier, Doctor Toby Glyer and William Connors made a revolutionary breakthrough in nanotechnology. However, a nanite mission went awry and the program was shut down. Now, a large asteroid is on a collision course with Earth and the best hope is the lost nanites...

Two hundred years before the discovery of the Ringworld, covert agent Sigmund Ausfaller represents Earth's secret weapon, humanity's best defense against all conspiracies--real and imagined. Who better than a brilliant paranoid to expose the devious plots of others? Yet he may fi...

Science fiction writer Allen Carpenter returns to hell in order to rescue the souls that are trapped there.

Rick Schumann builds a tavern catering to visiting aliens, an interplanetary gathering place situated in Siberia that is known as Draco Tavern.

A cross-over conclusion to the Ringworld and Fleet of Worlds series finds the Puppeteers of the Fleet of Worlds targeted by rival war fleets after the disappearance of the Ringworld, prompting exiled Puppeteer Hindmost to draw on his knowledge of Ringworld technology to reclaim h...