Deep in the Nevada desert is the most secure compound in the United States: Area 51. The most chilling experiment of all time is about to begin there. The president doesn't know about it. Just a few scientists and military personnel working for Majestic-12 do, and they are about to make a very big mistake.

Many millennia ago, humans, including us, were seeded on 15 worlds by an alien race, the Airlia. We believe we evolved, but the reality is we were bred as cannon fodder for the Airlia’s interstellar war against the Swarm, a viral race whose only mission appears to be the obliteration of sentient life wherever encountered. On some worlds humans realized the truth about their origins, uncovered their hidden alien overlords, and rebelled.

Hidden deep beneath the Metropolitan Museum of Art is the Time Patrol, a secret agency charged with protecting the world's timeline from the evil forces who wish to alter it. When the patrol disappears without a trace, only 12 short hours are left before all life on Earth ceases to exist.

When a series of devastating terror attacks brought down the United States, Conor and Barb assumed they were safe in their compound. They had everything they needed. They were armed and highly trained. But then, Barb was kidnapped. The kidnappers didn’t know why Conor was known as The Mad Mick. They didn’t know the fear and respect his name invoked in the shadowy underworld of covert operations. They didn’t know that when it came to protecting his family, he was without conscience, without compassion, and without equal. But they would soon find out.

A pyramid predating all known cultures appears without warning. Its discovery throws into question everything we know about the origins of mankind. Inside lies incredible technology, proof of a culture far more advanced than our own. Something dark lurks within, eager to resume a war as old as mankind. When it is unleashed it heralds the end of our species’ reign.

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.

After a rough break up, Wyatt moves to New York City, eager to prove himself while working on Wall Street. When he’s asked to visit the father of his ex-girlfriend, a billionaire tycoon, his fate is sealed. The revolutionary company, Nu-En, launches a radical innovation, an energy that will allow every person on the planet access to power. Only it doesn’t perform as anticipated. Harnessing the ocean has consequences, and highly dangerous creatures emerge from the depths. Soon, the Earth is fracturing, and the world will never be the same.

Get ready to experience two more origin stories in the Backyard Starship universe.

The Confederated Systems Alliance has spread to dozens of systems, creating the first true interstellar alliance dedicated to bringing peace and prosperity to all inhabited worlds. Unfortunately, some see this new alliance as a threat to their own seats of power, and would do anything to stop it. After a well deserved rest, Captain Nathan Scott is once again called into action. This time, it is not the fate of the galaxy that is on his shoulders, but the life of one of his dearest friends. But not all is as it appears.

The mission is simple. Escort an emissary to an intergalactic peace summit. Try not to get in the way. Lt. Magnus and his 79th Recon Team have certainly handled worse, after all. But when an explosion rocks the tower and sends everyone into a panic, Magnus and his asset find themselves cut off from the rest of the team. Worse still, a dying alien chieftain gives them a priceless drive of intel, marking them for death. The mission has officially changed. With enemies on all sides, Magnus must do everything in his power to protect the emissary and escape the tower.

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....

The 26th century. Humanity has expanded beyond Earth’s system to hundreds of planets that colonists now call home. But the United Earth Government and the United Nations Space Command is struggling to control this vast empire. After exhausting all strategies to keep seething colonial insurrections from exploding into a full-blown interplanetary civil war, the UNSC has one last hope.

In the 20th century Earth sent probes, transmissions, and welcoming messages to the stars. Unfortunately, someone noticed. The Galactics arrived with their battle fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined their vast Empire. Swearing allegiance to our distant alien overlords wasn't the only requirement for survival. We also had to have something of value to trade, something that neighboring planets would pay their hard-earned credits to buy. As most of the local worlds were too civilized to have a proper army, the only valuable service Earth could provide came in the form of soldiers....

From the Audie-nominated narrator of The Martian. In eleven years' time, a million members of an alien race will arrive at Earth. Years before they enter orbit, their approach will be announced by the flare of a thousand flames in the sky, their ships' huge engines burning hard to slow them from the vast speeds needed to cross interstellar space. These foreboding lights will shine in our night sky like new stars, getting ever brighter until they outshine even the sun, casting ominous shadows and banishing the night until they suddenly blink out.

They won't settle for mere victory. They want to exterminate us. Every last one of us. A surprise attack has sent the Star Alliance fleeing for its life. A remnant of a remnant, their meager fleet—all that remains alive—flees to what seems like a safe harbor: a forgotten backwater planet called Earth. Join ace fighter pilot Chase as he teams up with the modern-day militaries of Earth and fights the last battle for the universe.

Predator ships stream into human space in unprecedented numbers. The Colonial Marines, controlled by Weyland-Yutani, respond to the incursion, thus entering the Rage War. This terrifying assault by the Yautja cannot go unchallenged, yet the cost of combat is high. Predators are master combatants, and each encounter yields a high body count. Then, when Lt. Johnny Mains and his marines - the VoidLarks - enter the fray, they discover an enemy deadlier than any could imagine.

Hybrid fighters merging human and alien technology. Massive cannon emplacements on the moon and Mars. A planetary defense force with the finest military personnel ever trained. For two decades we've known the enemy would return. The nations of Earth have collaborated on a unified defense program designed to defend the planet.

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.

Tucked away in a high-tech Tactical Operations Center, inside an isolated safehouse in the Horn of Africa, sits Agency analyst Zack Altringham. He is Kenyan-born, Princeton-educated, badly burnt-out - and condemned by his language and cultural skills to a lifetime of fighting America's shadow counter-terror wars.

In your hands is the handwritten journal depicting one man's struggle for survival. Trapped in the midst of global disaster, he must make decisions; choices that ultimately mean life, or the eternal curse to walk as one of them. Enter, if you will, into the world of the undead.

The Earth lies in ruins in the aftermath of an extraterrestrial invasion, the land devastated by a desperate war with no winners between mankind and a race of vicious, intelligent creatures. The seas are drying up while the atmosphere corrodes and slowly cooks any life remaining on the now desolate rock. Food is scarce, trust even more so, and the only people left alive all have done horrific things to stay that way.

In the future, the terminally ill can prolong life by surrendering their consciousness to a cybernetic life form that is then recruited into the notorious Legion of the Damned, an elite fighting unit charged with protecting humanity.

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.

The Year is 2040. The Marines have landed on Mars to guard the unearthed secrets of an ancient and dangerous alien race: Ourselves. Scientists have discovered something astonishing in the subterranean ruins of a sprawling Martian city: startling evidence of an alternative history that threatens to split humanity into opposing factions and plunge the Earth into chaos and war.

In the summer of 1947, an unidentified object crashed in Roswell, New Mexico. There were no survivors. Now it's happened again. But this time, two creatures have emerged from the wreckage alive.

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.

Jan Kulozik was one of Earth's privileged elite. A brilliant young electronics engineer, he enjoyed all the blessings of a twenty-third-century civilization that survived global collapse and conquered the starts, unaware of the millions who slaved or starved to maintain his way of life. Then Jan met Sara, a beautiful agent of the rebel underground dedicated to smashing Earth's rigid caste system. Through her he discovered the truth behind the lies he'd been taught.

In AD 2600, the human race is finally beginning to realize its full potential. Hundreds of colonized planets scattered across the galaxy host a multitude of prosperous and wildly diverse cultures. Genetic engineering has pushed evolution far beyond nature's boundaries, defeating disease and producing extraordinary spaceborn creatures. Huge fleets of sentient trader starships thrive on the wealth created by the industrialization of entire star systems, and throughout inhabited space the Confederation Navy keeps the peace.

Death awaits the curious! Out along the rim of the galaxy hangs a loose configuration of some 60 stars known as the Faustian Chain. This whorl of sparkling suns is rich in planets and occupies an irregular volume of space some 20 light years in diameter. From an external viewpoint, the Chain presents a colorful display of plasma-streams, luminous nebulae and sparkling pinpoints of light.

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.