Dev Cameron joined the military to fly a starship but is rated unsuitable and grudgingly accepts an assignment with the ground forces, piloting a massive walking tank (a warstrider). But Cameron may yet get a chance at glory when he makes a discovery about the alien foes that could change the course of the war.

In the final days of World War II, the Allies ransacked Berlin. Third Reich scientists were highly sought-out prizes for Americans and Russians desperate to possess Nazi nuclear knowledge. But they failed to capture one of the most vital members of Adolf Hitler’s inner circle, Hans Kammler, a liaison with the Nazis’ silent partners whose technological wonders nearly helped the Axis win the war - the alien species the Germans called the Eidechse. More than seven decades later, US Navy SEAL Mark Hunter witnesses the impossible in North Korea....

There is a milestone in the evolution of every sentient race, a Tech Singularity Event, when the species achieves transcendence through its technological advances. Now the creatures known as humans are near this momentous turning point. But an armed threat is approaching from deepest space, determined to prevent humankind from crossing over that boundary - by total annihilation if necessary.

Many millennia ago, the human race was enslaved by the An - a fearsome alien people whose cruel empire once spanned the galaxies, until they were defeated and consigned to oblivion. But a research mission to the planet Ishtar has made a terrifying - and fatal - discovery: The Ahanu, ancestors of the former masters, live on, far from the reach of Earth - born weapons and technology ... and tens of thousands of captive human souls still bow to their iron will.

The year is 2162. Thirty-eight years after first contact, Lord Commander Grayson St. Clair leads the Tellus Ad Astra on an unprecedented expedition to the Galactic Core, carrying more than a million scientists, diplomats, soldiers, and AIs. Despite his reservations about their alien hosts, St. Clair is deeply committed to his people - especially after they're sucked into a black hole and spat out four billion years in the future. Civilizations have risen and fallen. The Andromeda Galaxy is drifting into the Milky Way. And Earth is most certainly a distant memory.

Chaos has erupted throughout the known galaxy, threatening countless colonies and orbital habitats - as the Associative struggles vainly to keep the peace. Extreme measures are called for in these times of dire crisis, and the Star Marines are awakened from their voluntary 850-year cybe-hibe sleep. But General Trevor Garroway and his warriors are about to discover that the old rules of engagement have drastically changed.

Aliens exist...and, as it turns out, most of them aren’t that friendly. Jacob Brown wasn’t even born yet the first time they attacked Earth. He was only 14 the second time it happened. When Earth finally came together and fielded its first spaceborne military, Jacob didn’t hesitate to volunteer. Serving aboard a mighty starship, he’d be able to defend his planet - and his family - when, inevitably, they came again.

When Van Tudor returns to his childhood home, he inherits more than the family farm. His grandfather used to tell him fantastic stories of spacemen and monsters, princesses and galactic knights. Little did Van realize, the old man's tales were more than fiction; they were real. Hidden beneath the old barn, Van’s legacy is waiting: a starship, not of this world. With his combat AI, an android bird named Perry, Van takes his first steps into the wider galaxy. He soon finds that space is far busier and more dangerous than he could have ever conceived.

Out of the blue, a young Space Fleet officer's dream becomes reality: He's made captain of a starship. Just in time for the return of humanity's most terrible enemy, after 50 years of peace. To survive against this enemy, Captain Tad Thatcher will have to do more than learn how to become an effective commander, or how to wrangle his wayward crew. He will need to reinvent space combat. From scratch.

Stephanie Harrington had always expected to be a forest ranger on her homeworld of Meyerdahl until her parents relocated to the frontier planet of Sphinx in the far distant Star Kingdom of Manticore. It should have been the perfect new home - a virgin wilderness full of new species of every sort, just waiting to be discovered. But Sphinx is a far more dangerous place than ultra-civilized Meyerdahl, and Stephanie's explorations come to a sudden halt when her parents lay down the law: no trips into the bush without adult supervision!

Geary believed in the Alliance. Even when he uncovered overwhelming evidence that the highest echelons of the government and fleet command were involved in secret programs and prison camps, he believed it was worth saving. He believed his duty was to see that justice was served even though some factions feared that revealing the truth would cause the Alliance to crumble. But after narrowly surviving two assassination attempts when he brings evidence of the misdeeds to the capital star system, Geary realizes that some want to get rid of him.

For Lt. Commander Colin Maclntyre, it began as a routine training flight over the moon. For Dahak, a self-aware Imperial battleship, it began millennia ago when that powerful artificial intelligence underwent a mutiny in the face of the enemy. The mutiny was never resolved - Dahak was forced to maroon not just the mutineers but the entire crew on prehistoric Earth.

Engines. Genetically modified warriors that keep the great Nova Alliance war machine churning against the enemy Coalition. Most days, Engines are all that stand between salvation and chaos. Led by legendary Engine Captain Akira Hayashi, Shadow Squad has fought on the frontlines for a decade. They are on the brink of victory when the Coalition launches a series of desperate and devastating attacks that cripple the Nova Alliance restoration sites vital to save the dying planet.

The best-selling, epic space adventure, Freedom's Fire: the complete series of six audiobooks, in one bundle.

Terminal Lance Lucky Lee Savage likes his life. Sure, doing PT hungover is a pain, but no one can dodge responsibility like he can - or sweet-talk the cooks into giving out double rations.

There is a milestone in the evolution of every sentient race, a Tech Singularity Event, when the species achieves transcendence through its technological advances. Now the creatures known as humans are near this momentous turning point. But an armed threat is approaching from deepest space, determined to prevent humankind from crossing over that boundary - by total annihilation if necessary.

When the Colony on Hayden's world went black, a team was sent to investigate. It was supposed to be a training mission: skip in, find out the Casimir Transmitter had gone dead, report back and wait for resupply from the Fleet. By the time the only surviving member of the team made landfall, it was spectacularly clear that this wasn't a training mission.

Book #1 of the Stellar Conquest series... In 2115, EarthFleet sends its best warships and bravest Marines on a one-way trip to conquer an alien star system - to win or die trying.

The Hundred Worlds have withstood invasion by the relentless Hok for decades. The human worlds are strong, but the Hok have the resources of a thousand planets behind them, and their fleets attack in endless waves. The long war has transformed the Hundred Worlds into heavily fortified star systems. Their economies are geared for military output, and they raise specialized soldiers to save our species. Assault Captain Derek Straker is one such man among many.

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.

Terrence Compton is one of Earth's greatest admirals, a warrior almost without equal. Alongside his oldest friend and brilliant colleague, Augustus Garret, he and his forces saved Earth from invasion by the robotic legions of the First Imperium's insane computer Regent. There is just one problem. The First Imperium was held back by the disruption of the sole warp gate connecting the two domains...and Compton and 300 of his ships are trapped on the wrong side, surrounded by the Regent's vast fleets and cut off from Earth.

After almost a century of peaceful exploration and colonization of space, the United Earth Space Force stumbles across a shockingly xenophobic alien race that has more and better armed ships and refuses all attempts at contact. As the outgunned Space Force is driven back in battle after battle in what appears to be a war of extermination, one officer experiences precognitive visions that help him blunt the enemy onslaught, but he can't control or predict when they occur.

In the 25th century, humans have conquered space. The advent of faster-than-light travel has opened up hundreds of habitable planets for colonization, and humans have exploited the virtually limitless space and resources for hundreds of years with impunity. So complacent have they become with the overabundance that armed conflict is a thing of the past, and their machines of war are obsolete and decrepit. What would happen if they were suddenly threatened by a terrifying new enemy?

Earth is conquered. Sol is lost. One ship is tasked to free them. One Captain to save them all. When an alien armada destroys the United Earth Space Force and takes control of the human homeworld, newly reinstated Captain Annette Bond must take her experimental hyperspace cruiser Tornado into exile as Terra's only interstellar privateer. She has inferior technology, crude maps, and no concept of her enemy, but the seedy underbelly of galactic society welcomes her so long as she has prizes to sell and money to spend.

Spacers call the warp point Charon's Ferry. No star ship has ever entered it and returned since a vengeful Orion task force pursued a doomed Terran colonization fleet into it in 2206. Almost a century has passed. The fiery hatreds of a quarter-century of warfare between the Terran Federation and the Zheeerlikou'valkhannaieeee, the cat-like species humans called the "Orions", have eased at least a little.

Captain Mitchell "Ares" Williams is a space marine and the hero of the Battle for Liberty whose shot heard 'round the universe saved the planet from a nearly unstoppable war machine. He's handsome, charismatic, and the perfect poster boy to help the military drive enlistment. Pulled from the war and thrown into the spotlight, he's as efficient at charming the media and bedding beautiful celebrities as he was at shooting down enemy starfighters.

It’s survival of the fittest in a brutal war of extinction! Created in the gene labs as super soldiers, the Highborn decide to replace the obsolete Homo sapiens. They pirate the Doom Stars and capture the Sun Works Ring around Mercury. Now they rain asteroids, orbital fighters and nine-foot tall drop troops onto Earth in a relentless tide of conquest. Marten Kluge is on the receiving end. Hounded by Thought Police, he lives like an ant in a kilometer-deep city.

The year is 2650. Seventy-five years ago, an alien fleet attacked Earth. Without warning. Without mercy. We were not prepared. Hundreds of millions perished. Dozens of cities burned. We nearly lost everything. Then the aliens abruptly left. We rebuilt. We armed ourselves. We swore: never again. But the aliens never came back. Until now. With overwhelming force the aliens have returned, striking deep into our territory, sending Earth into a panic.

When the Synthetic Intelligence Val Ky Ree wakes from her emergency shut-down after a climactic battle, she discovers thousands of years have passed, and her creator race, the Aesir, have all gone. The last of her kind, she finds a new purpose in protecting the remaining few thousand humans from the hostile alien races called The Compact. As humanity teeters on the edge of extinction, one human male helps her to realize her destiny.

Howard Falcon almost lost his life in an accident as the first human astronaut to explore the atmosphere of Jupiter - and a combination of human ingenuity and technical expertise brought him back. But he is no longer himself. Instead he has been changed into an augmented human: part man, part machine, and exceptionally capable.