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?

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.

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.

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.

Earth has been a scarred ruin for three decades, its scattered people struggling to survive amid the poisoned and radioactive wreckage of the final war between its despotic superpowers. While the people of Earth struggle to survive, out on the frontier, on a thousand worlds, mankind thrives and grows, building new civilizations and looking boldly to the future. But man has never been able to live in peace, and even Earth's sad fate has failed to slow the call to war.

In the 23rd Century, the Superpowers of Earth vie for control of occupied space and the vast resources of the colony worlds. Darius Jax is a senior officer and hero of the Marine Corps, veteran of countless battles fought throughout occupied space. But once he was a raw private fighting his first battle on a planet so deadly, so hellish, its own occupants called it Tombstone. This is his story, before fame, before glory. The fighting on Tombstone is brutal and deadly, and Jax must find his inner strength if he is to survive.

Five years ago, aliens destroyed a carrier and its airwing at Jupiter without warning. Since then, the Earth’s nations have learned to work together, and they want to know more about the aliens who appeared, attacked, and vanished without a trace. The Americans have provided a new carrier. Chinese technology has made going after the invaders possible. And the Russians have developed a new control system that will give the craft never-before-seen capabilities. Mankind’s next war is upon us, and Uplink Squadron is the tip of the spear.

Two centuries after the Confederation staved off an invasion by the robotic Locusts, Captain Jack Romanoff faces mandatory retirement from an ever-shrinking navy. Actions speak louder than words. The Confederation doesn’t think the Locusts are coming back. But what if the politicians are wrong?

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.

Mars and the Moon have been colonized, piracy runs rampant in the asteroid belts, and a thriving society grows in the depths of space. Humanity prepares to embark upon its greatest journey - the colonization of Alpha Centauri. Then, everything changes. A deep space reconnaissance probe discovers a new Earth-like planet 12 light-years from Earth’s sun. The probe also finds something unusual, something unnerving. A new mission is created, a space fleet is formed, and humanity embarks on unravelling the greatest mystery of all - the origins of life itself.

Over the years, humans have grown used to their position within the empire, serving as soldiers and spacers for alien masters as well as building a place in the universe for themselves. But now, in the aftermath of a violent interstellar war that shattered the power of the Alphans, humanity has rediscovered its pride.

Two hundred years ago, aliens invaded Earth. A violent war followed. The enemy won. Some of us escaped, most of us didn’t. On Proxima they flourished - the invasion forgotten. On Earth we floundered - the horror began. Their world is advanced, peaceful, and secure. Our world is broken, savage, and overrun. A new invasion is coming. A hunger that has swallowed half the universe. They don’t care which planet we live on. They want to end us all. But where there is life, there is hope. And where there is hope, there are heroes. This time, vengeance will be ours.

After two brutal, bloody struggles for their very existence against implacable alien foes, humanity is victorious, but not at peace. As distrust and accusations consume the political discourse between the two major factions, the Eastern Star Alliance military has already begun executing small raiding missions into United Terran Federation space. The Federation fleet, still reeling from the last war, is in no shape to try and protect its own borders.

The year is 2108, and the North American Commonwealth is bursting at the seams. For welfare rats like Andrew Grayson, there are only two ways out of the crime-ridden and filthy welfare tenements: You can hope to win the lottery and draw a ticket on a colony ship settling off-world...or you can join the service. With the colony lottery a pipe dream, Andrew chooses to enlist in the armed forces for a shot at real food, a retirement bonus, and maybe a ticket off Earth.

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.

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.

Earth has been a scarred ruin for three decades, its scattered people struggling to survive amid the poisoned and radioactive wreckage of the final war between its despotic superpowers. While the people of Earth struggle to survive, out on the frontier, on a thousand worlds, mankind thrives and grows, building new civilizations and looking boldly to the future. But man has never been able to live in peace, and even Earth's sad fate has failed to slow the call to war.

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.

In the year 2280, an alien fleet attacked the Earth. Their weapons were unstoppable, their defenses unbreakable. Our technology was inferior, our militaries overwhelmed. Only one starship escaped before civilization fell. Earth was lost. It was never forgotten. Fifty-two years have passed. A message from home has been received. The time to fight for what is ours has come.

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.

The plot by the Galactic Union’s Mercenary Guild against the Four Horsemen has culminated in an invasion of Earth. Faced with an overwhelming force, the human mercs had no choice. They’ve fled, leaving Sansar Enkh to go to the Mercenary Guild headquarters on Capital Planet to stand trial for humanity. On the run, Jim Cartwright and Nigel Shirazi have travelled to the Winged Hussars’ secret base of New Warsaw, in an effort to convince Alexis Cromwell to join the fight, while the other mercenaries who escaped the fall of Earth have gone to the perceived safe haven of Karma.

The Phage War had been a devastating conflict for the Terran Confederacy. Even with the destruction of their terrifying, implacable foe, humanity is still reeling. Political alliances are crumbling, and their mighty fleet is in tatters. There is nothing to celebrate, even after such a complete victory. They soon learn that there are other stellar neighbors - and they've been watching the conflict with great interest. One species comes with an offer of friendship and alliance, but humanity is weary and distrustful.

Seventy years ago, the interstellar supercarrier Ark Royal was the pride of the Royal Navy. But now, her weapons are outdated and her solid-state armour nothing more than a burden on her colossal hull. She floats in permanent orbit near Earth, a dumping ground for the officers and crew the Royal Navy wishes to keep out of the public eye. But when a deadly alien threat appears, the modern starships built by humanity are no match for the powerful alien weapons.

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 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.

One starship will either save Earth or destroy her. A century ago our star erupted, destroying Earth's wormhole network and closing off trade with her colonized planets. After being out of contact with the younger worlds for so many years, humanity is shocked when a huge ship appears at the edge of the solar system. Our outdated navy investigates, both curious and fearful. What they learn from the massive vessel shocks the planet.

Kyle Riggs is snatched by an alien spacecraft sometime after midnight. The ship is testing everyone it catches and murdering the weak. The good news is that Kyle keeps passing tests and staying alive. The bad news is the aliens who sent this ship are the nicest ones out there.

The first book of best-selling sci-fi author Jack Campbell’s new series Beyond the Frontier returns to find Captain John “Black Jack" Geary, the hero of the Lost Fleet series, awoken from cryogenic sleep to take command of the fleet. Geary’s legendary exploits have earned him the adoration of the people—and the enmity of politicians convinced that a living hero can be a very inconvenient thing.

It came from deep space. It sent the signal. Now our computers are killing us, helping the enemy drive us into extinction. But some of us refuse to die. We fight back. We learn. Jon Hawkins revives from cryogenic sleep in a drifting SLN battleship. The crew is dead and the main computer has been destroyed. Jon is a soldier, the start of the resistance, the one man with the will to beat the alien death machines that have terminated 1000 races. This is our hour as we face the ultimate evil, the galactic destroyer of life.

They tried to destroy our planets. Our way of life. They tried to send us into extinction. But we, the Coalition, fought them and won. That was a decade ago. They’re known as the Host: a cabal of aliens seeking to dominate our sector of space. And they’re back - with help from a powerful new enemy. We’re outnumbered and unprepared. But there is hope. An ancient race of long-dead but technologically advanced aliens called the Navigators have a ship called the Blackstar that could potentially turn the tide. That is if I, Kai Locke, a humble ship racer, can find it and learn how to harness its power in time.