Following the initial Martian invasion of England, President Theodore Roosevelt tries to prepare the United States for the potential of another Martian incursion. As the possibility of a stronger invasion is increasingly clear, the US government tries to mobilize nations to share information and technology to defend humanity. Newly minted ordinance officer Andrew Comstock has been placed in charge of developing new technology that has to be tested on the fly in a race against time if humanity is to survive.

There's a reason We Are Legion was named Audible's Best Science Fiction Book of 2016: Its irresistibly irreverent wit! Bob Johansson has just sold his software company for a small fortune and is looking forward to a life of leisure. The first item on his to-do list: Spending his newfound windfall. On an urge to splurge, he signs up to have his head cryogenically preserved in case of death. Then he gets himself killed crossing the street. Waking up 117 years later, Bob discovers his mind has been uploaded into a sentient space probe with the ability to replicate itself.

Fourteen outstanding authors. Fourteen worlds that never were. Throughout the human experience, historians have wondered, “What if?” What if Japan had been on the side of the U.S. in World War II? What if things had been just a little different in the Falklands? What if Russia had started World War Three?

The human soldiers stranded on the planet Paradise have been recruited into an alien legion to do the dirty jobs that the high-tech species won't do. Their first mission is to kick the enemy off a backwater planet no one cares about. It's a simple assignment, except everyone has a hidden agenda, and the planet could become a deathtrap. 

The Ruhar hit us on Columbus Day. There we were, innocently drifting along the cosmos on our little blue marble, like the Native Americans in 1492. Over the horizon came ships of a technologically advanced, aggressive culture, and BAM! There went the good old days, when humans got killed only by each other. So, Columbus Day. It fits. When the morning sky twinkled again, this time with Kristang starships jumping in to hammer the Ruhar, we thought we were saved.

Book 1: Albion Lost: For centuries, the Daegon waited. They plotted. And now they are ready to strike. The core worlds of settled space enjoy a tenuous peace, unaware and ill prepared for the threat building beyond the furthest reaches of humanity. The star kingdom of Albion stands as a shining light of justice and mercy in a harsh galaxy, and they will be the first to suffer the Daegon's fury. Book 2: The Long March: Commodore Thomas Gage and his fleet, safeguarding the last of the Albion Royal Family, are on the run.

A distress transmission from Mars research colony warns of an advanced and unknown enemy approaching the heavily populated lunar colony. An elite marine unit commanded by Major Mitch Taylor is dispatched to protect the beleaguered civilians. However, the attack is merely a prelude to a massive invasion of Earth.

Chief Katherine “Kit” Carson, of the elite Pathfinder Corps, joins the mission as a last-minute replacement, hoping to put a spotty past behind her and build a new life on a brave new world. The expedition arrives on Terra Nova, expecting to join the first wave of colonists, instead they find abandoned cities and are soon faced with a new, terrifying enemy humanity has never encountered before. This publisher pack includes Terra Nova and Bloodlines.

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.

Cthulhu Armageddon is the story of a world 100 years past the rise of the Old Ones which has been reduced to a giant monster-filled desert and pockets of human survivors (along with Deep Ones, ghouls, and other "talking" monsters).

Twenty years have passed since the interstellar scourge known as the Husnock were exterminated without warning by a being with godlike abilities. Left behind, intact but abandoned, their desolate worlds and derelict ships brim with destructive potential. Now a discovery by a Federation cultural research team has drawn the attention of several ruthless factions. From black market smugglers to alien military forces, it seems every belligerent power in the quadrant hopes to capture the Husnock's lethal technology.

Ryker only has one goal in his life right now: Turn a certain adventuring guild into a flaming wreck while dancing merrily through the smoldering ruins. All for the chance to get back at a handful of people. It isn’t as if they didn’t deserve it either. They had driven him from his home. Chased him physically from the very guild house itself.  Simply because he wasn’t as strong as they expected him to be. As strong as he’d expected himself to be. He’d returned the next day and left with something he’d hidden away and told no one about when he found it in one of his few Dungeon Dives.

Their historic five-year mission is over. Kirk, Spock, McCoy, Scotty, and all the crew have scattered to other jobs or other lives. Now, they are back together again on a fabulously refitted USS Enterprise as an incredibly destructive power threatens earth and the human race. 

War seethed across the planet. Machines soared through the air, churned through the seas, crawled across the surface, pushing ever forward, carrying death. Earth was engaged in titanic struggle. Germany, Russia, France, China, Japan: the maps were changing day by day. The hostilities spread in ever-widening ripples of destruction: Britain, Italy, Africa...the fate of the world hung in the balance. Then the real enemy came.

On December 7, 1941, the Japanese launched an attack against U.S. naval forces stationed in Pearl Harbor, Hawaii. But what if the Japanese followed up their air assault with an invasion and occupation of Hawaii? This is the question explored by Harry Turtledove in Days of Infamy, with frightening implications.