Deadly radiation from a passing comet is about to destroy life on Earth. In desperation, the US government constructs a series of underground shelters to protect as many people as possible. They are expected to be underground for 20 years before returning back to the surface. But can they survive their time within the confines of the underground shelter? And what will they find when they finally emerge?

Two civilizations clash. A rebellion grows. The fate of the galaxy hangs in the balance. Technical Chief "Pappy" Gunther is a grizzled, burning-out commando in the United Earth Armed Forces. He ponders a return to civilian life, yet feels a strong sense of belonging to his elite team. When colonists on a far-flung world request aid, a task force from several allied systems is assembled. Pappy and his crack unit are sent to investigate and to engage a mysterious alien force from beyond.

Continuing the legacy of decades gone by, these fast-paced standalone stories offer wondrous settings, philosophical sci-fi questions, and twists that pack a punch.

A formidable alien armada stands on the brink of vanquishing the cosmos, their gaze set firmly on every inhabited world. The last line of defense? An eclectic crew of improbable champions: a maverick starfighter pilot, a daredevil stuntwoman, a lethal super-assassin, and a cosmic prankster with alien tricks up his sleeves. Their mission is to shield not just humanity, but billions of other intelligent lifeforms spanning the multiverse.

In Lake Maracaibo, in the northwestern part of Venezuela, a long-hidden extraterrestrial artifact underneath the ocean floor triggers a disaster. The United States military launches an expedition, sending a cutting-edge team of international researchers to the source of a magnetic instability that's destroying any electronics in the region.

Merritt Alder is done with Earth. The planet is polluted and overpopulated, and its people are hungry. Earth's first colony, Galena, is a pioneer world 10,000 light years away. It has clean air, unpolluted water, and continents of arable land. Anyone can start a new life…if they can get there. For Merritt, the journey is only the beginning. Obstacles arise every step of the way, forcing compromise and sacrifice. And not everyone on his ship is pure of heart. The bonds he forges on the journey will be the key to surviving on another world—a world anyone has yet to fully explore.

Hudson Powell had always been a drifter, but after his father died, he vowed to turn his life around. He quit freelancing as a starship pilot and joined the Relic Guardian Force as a 38-year-old rookie. That was a big mistake. The RGF police the alien wrecks that have been found on every portal world discovered in the last century. They make sure the relic hunters pay taxes on the priceless alien tech they scavenge from the hulks. The snag is that the RGF is corrupt. And Hudson’s training officer Logan Griff is the worst scumbag of the lot.

After his mom died from cancer, Wash gave up his girlfriend and his dream of being a career Army officer to stay home and take care of his father, a former Special Forces soldier stricken with PTSD. Wash works three jobs just to pay the bills, and one of them is at the ranch of the man who’s engaged to his exgirlfriend, Jimmy Bonner. Sound rough? He thought so too … until a portal to a hell-world of giant, insectoid aliens opens behind the ranch house, sucking Wash and Jimmy into the nightmare domain of the Hive Mind.

Get all four books in the Contingency War Series for one low price. Hours of epic space opera action and adventure with unique heroes and twists that you won’t see coming! The series includes: The Contingency, The Way Station Gambit, Rise of Nimrod Fleet, and Earth’s Last War.

Drake, a retired police detective, receives a call in the dead of night from an alien-obsessed podcaster. He hastily departs for Montana the following morning. The phenomenon continues all over the globe. What are they? What do they mean? Britt is on assignment for a digital magazine when she encounters one of the Glass in a tragic boating accident, leaving her no choice but to follow the lead. Panic ensues as mysterious creatures are sighted.

Still haunted by the disappearance of his little sister, Amy, over 20 years ago, Joseph Bridgeman’s life has fallen apart. When a friend talks him into seeing hypnotherapist Alexia Finch to help with his insomnia, Joseph accidentally discovers he can time travel. His first trip only takes him back a few minutes, but his new-found ability gives him something he hasn’t felt for the longest time: hope.

Dennis E. Taylor, author of the best-selling Bobiverse trilogy, explores a whole different, darker world in this sci-fi stand-alone. Determined to give his wife and children a better life back home, Ivan Pritchard ventures to the edge of known space to join the crew of the Mad Astra as an asteroid miner. He's prepared for hard work and loneliness—but not the unthinkable. After coming into contact with a mysterious alien substance, Pritchard finds an unwelcome entity sharing his mind, and a disturbing physical transformation taking place.

Charlie7 is the progenitor of a mechanical race he built from the ashes of a dead world—Earth. He is a robot of leisure and idle political meddling—a retirement well-earned. Or he was, until a human girl named Eve was dropped in his lap. Geneticists have restored Earth’s biome and begun repopulation. But primate cloning is in its infancy; human cloning is banned. Far from a failed genetics experiment, Eve is brilliant, curious, and heartbreakingly naïve about her species’ history. But Eve’s creator wants her back and has a gruesome fate planned for her.

2069: Earth is dying, and society is on the brink of collapse. We are out of time to save the planet. All that’s left is to watch the world burn, but the apocalypse is about to take an unexpected twist. Alice Rice has discovered the impossible: a potentially habitable world in close proximity to Earth. The media is calling it Planet B.

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.