Set in a world in which the Roman Empire never fell, Clash of Eagles finds Praetor Gaius Marcellinus leading his 33rd Legion into Nova Hesperia. But there his conception of the world is challenged by encounters with the Powhatani, Iroqua, and Cahokiani tribes.

It's 1974, and Jerry Stieglitz is a grad student in marine biology at UCLA with a side gig selling short stories to science fiction magazines, just weeks away from marrying his longtime fiancée. Then his life is upended by grim-faced men from three-letter agencies who want him to join a top-secret "Project Azorian" in the middle of the north Pacific Ocean—and they really don't take "no" for an answer. Further, they're offering enough money to solve all of his immediate problems.

During the test flight of a prototype faster-than-light craft, Lt. Commander Ky is flung into an ancient past that never existed. Rome has fallen, defeated by the mighty Carthaginian Empire, its survivors chased off the continent and onto what had been the remote province of Britannia. Hounded by the Carthaginians bent on conquering the known world, Rome is on the verge of destruction. Stranded and alone, except for a tactical AI implanted in his head, Ky has lost everything and must find a way to live in a world different than anything he's ever known.

Inheriting your uncle's supervillain business is more complicated than you might think. Particularly when you discover who's running the place. Charlie's life is going nowhere fast. A divorced substitute teacher living with his cat in a house his siblings want to sell, all he wants is to open a pub downtown, if only the bank will approve his loan. Then his long-lost uncle Jake dies and leaves his supervillain business (complete with island volcano lair) to Charlie. But becoming a supervillain isn't all giant laser death rays and lava pits.

Five days after Owen Zastava Pitt pushed his insufferable boss out of a 14th story window, he woke up in the hospital with a scarred face, an unbelievable memory, and a job offer. It turns out that monsters are real. All the things from myth, legend, and B-movies are out there, waiting in the shadows. Some of them are evil, and some are just hungry. Monster Hunter International is the premier eradication company in the business. And now Owen is their newest recruit.

In this alternate history of the American frontier and the Jacksonian era, a small change takes place in the Battle of the Horseshoe Bend during the War of 1812. What results is a cascade of new developments that becomes an avalanche. In our world, Ensign Sam Houston, just turned 21, led the charge on the creek barricade in that battle and almost died from a terrible wound that took him a year to recover from. In this world, his wound is minor, so he is able to continue fighting the British—and develop his close relationship with Andrew Jackson much sooner.

Nick Morrison always wanted to be an astronaut. When a start-up company recruits him to build a lunar launch system at the moon’s south pole, Nick gladly leaves behind his troubled life on Earth—but Nick doesn’t know that the company is in financial and legal trouble. Deprived of support from Earth, the team on the moon must figure out how to survive on their own. Worse yet, there’s another base at the lunar south pole, run by a ruthless contractor who has big plans for the moon...and for Earth.

Rumors begin to spread of a species of hyperintelligent, dangerous octopus that may have developed its own language and culture. Marine biologist Dr. Ha Nguyen, who has spent her life researching cephalopod intelligence, will do anything for the chance to study them. The transnational tech corporation DIANIMA has sealed the remote Con Dao Archipelago, where the octopuses were discovered, off from the world. Dr. Nguyen joins DIANIMA’s team on the islands: a battle-scarred security agent and the world’s first android.

Deep in the Arctic wilderness, Peter Freuchen awoke to find himself buried alive under the snow. During a sudden blizzard the night before, he had taken shelter underneath his dogsled and become trapped there while he slept. Now, as feeling drained from his body, he managed to claw a hole through the ice only to find himself in even greater danger: his beard, wet with condensation from his struggling breath, had frozen to his sled runners and lashed his head in place, exposing it to icy winds that needed only a few minutes to kill him. If Freuchen could escape that, he could escape anything.

Lynn Raven may be the boss master of WarMonger 2050 with her online persona of "Larry the Snake", but when the CEO of Tsunami Entertainment personally asks her, as a favor, to beta test a new augmented-reality game, she has to face her greatest fear: going outside and dealing with, ugh, people.

Dr. Sam Anderson is one of the most celebrated scientists in history. Ten years ago, he invented a device that changed the world forever. Now his life is about to be ripped apart—and his own creation may be to blame. One fateful morning, Sam discovers that his girlfriend has been murdered and that his daughter is accused of the crime. Sam believes she's innocent, but he can't prove it. There's only one thing he can do to save his daughter: confess to the crime. And so he does. But in the future, murderers aren't sent to prison. They're sent to the past.

On their way to fight in the Mexican-American War, a group of American soldiers are swept away to a strange and deadly alternate Earth in this thrilling new adventure set in the world of the New York Times best-selling Destroyermen series.

Tesla Crane, one of the richest women in the world, is on her honeymoon on an interplanetary space liner, cruising between Earth and Mars. She’s traveling incognito and is reveling in her anonymity. Then someone is murdered and her husband is named as the prime suspect. To save him from the frame-up, Tesla will risk exposure and face demons from her past. Even though doing so might make her the next victim.

A military unit is thrust back into Paleolithic times with only their guns and portable hardware. Ten soldiers on convoy in Afghanistan suddenly find themselves lost in time. Somehow they arrived in Earth's Paleolithic Asia. With no idea how they arrived or how to get back, the shock of the event is severe. They discover groups of the similarly displaced: imperial Romans, Neolithic Europeans, and a small cadre of East Indian peasants.

Nancy Kranich (played by Emmy-nominated actress Natasha Lyonne of Russian Doll and Orange Is the New Black) is a night nurse on an orbiting space station. But Nancy hates her job, is sick of space, and longs to find adventure and a safe place to smoke cigarettes that won’t blow everyone up. But when Nancy gets caught up in an outer-space conspiracy involving President Kennedy, former vice-president Richard Nixon, and an intergalactic object that could change the course of history, she gets way more adventure than she bargained for.

A troubled young woman is recruited by a race of ancient alien explorers to be their emissary to save the human race from extinction. The problem is that not everyone believes the world is doomed, and not everyone trusts the aliens' motives. Holly Burton will have to overcome opposition from world leaders, attacks by religious zealots, assassination attempts, intractable bureaucracies, and her own fears and doubts if she is to save the human race, not just from the coming apocalypse, but from itself.

In the extraordinary Worldwar tetralogy, set against the backdrop of World War II, Harry Turtledove, whom Publishers Weekly has called the "Hugo-winning master of alternate SF," wove an explosive saga of world powers locked in conflict against an enemy from the stars.

Fleeing Earth after an alien invasion, the human race stands on the threshold of evolution. Their new home is Luna, a moon colony blessed with creature comforts, prolonged lifespans, digital memories, and instant sex changes. But the people of Luna are bored, restless, suicidal - and so is the computer that monitors their existence.

Set in a world in which the Roman Empire never fell, Clash of Eagles finds Praetor Gaius Marcellinus leading his 33rd Legion into Nova Hesperia. But there his conception of the world is challenged by encounters with the Powhatani, Iroqua, and Cahokiani tribes.

The best science fiction scrutinizes our culture and politics, examines the limits of the human condition, and zooms across galaxies at faster-than-light speeds, moving from the very near future to the far-flung worlds of tomorrow in the space of a single sentence. Neil Clarke has selected the short science fiction (and only science fiction) best representing the previous year's writing, showcasing the talent, variety, and awesome "sensawunda" that the genre has to offer.

Gabriel Stone, an active duty US Marine, and Chloe Lidell, a resourceful Texas farm girl, are thrust into a deadly game where each round is more perilous than the last. Joined by a band of misfits—including a lovable service droid named Shit Bot—Gabriel and Chloe must navigate treacherous rounds, form alliances, and uncover a diabolical alien agenda. With every victory, they edge closer to the heart of the mystery…

When a salvage job on an old battlefield goes awry, Kril's left with no crew, no food, a suspiciously absent client, and far too many enemies. Fortunately, it's a big universe, and he's got a fast ship and the best pilot in twenty light-years to watch his back. His journey to keep 'er flying and get a crew back together will take him from rescue operations in collapsing freighters to fighting dinosaurs in the sewage canals of pirate paradises and to points beyond. The odds are stacked against him, but Kril keeps it simple.

Ben Davis was prepared for disaster. He just didn't know it would come so soon. He and his teenage son Joel, are miles deep in the backcountry of the San Juan Mountains when high-altitude nuclear electromagnetic detonations light up the pre-dawn sky. Ben, Joel, and their dog, Gunner, must make their way home - or whatever's left of it - on foot.

When the Terran Union has a mission that must not fail, it calls upon the Strike Marines. They are trained to improvise, adapt, overcome and win every fight. Terran Strike Marines: Publisher's Pack is an action-packed military science-fiction adventure set in the best-selling Ember War universe. This pack includes The Dotari Salvation and The Rage of Winter.

When Jack Harrison climbed down the short ladder from the airlock and stepped onto the debris covered soil, the ground crackled with the sound of dried leaves and twigs.