Thomas Nelson has traveled back in time to help George Washington survive the beginning of the American Revolution and change the course of history for the better. And he accomplishes that mighty task. But he’s not finished. Instead of riding off into anonymity to live with the woman he’s fallen in love with in 1777, General Washington has a request for Thomas, the Pale Rider, one that would alter the outcome of the war for the better. The French, and their support of the colonists, is at stake.

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.

After a brush with death at the tender age of nine, Faer Michelson has a near-perfect autobiographical memory. He has a good life, a loving wife, and he's only mildly concerned about Y2K. Sure, no one else remembers Bobby Kennedy was president or that time an alien took over the TV to declare war, but what's that in the grand scheme of things? Then one day Faer remembers something that he can't shrug off: his own death in 1968. It turns out the Time Warp isn't just a song in Rocky Horror.

New York Times best-selling author Eric Flint has received glowing critical praise for his Ring of Fire alternate history series. In this first installment, a West Virginia town is transported from the year 2000 to 1631 Germany at the height of the Thirty Years’ War. Thrust into conflict, the town residents must also contend with moral issues such as who should be considered a citizen.

After losing the only person he ever cared about, Alexander, a rogue artificial intelligence, opens a portal to an alternate dimension to escape his grief. Scanning trillions of different dimensions, Alexander finally finds a world that is reminiscent of the only time he was ever happy, back when he could play virtual reality games with his only friend. Only this new world isn't full of idyllic adventures and fantasy roleplaying. Instead, Alexander finds himself trapped in the middle of a city where monsters have ravaged the world and the only people alive struggle to survive.

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. 

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.

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.

Sam watches the demonic forces of darkness as they engulf and destroy the land of Westria. The final battle is over. Or so Sam thinks. In the last moments before the world’s end, Sam is given a second shot to save everything he holds dear. He’ll be sent back in time. Reincarnated into his younger self and armed with knowledge of the future, Sam will have the power to undo past mistakes and give the people of Westria a fighting chance against the impending apocalypse.

Back from his final deployment with the US Marines, Alan Carson is hiking across New Mexico’s Gila Wilderness to ponder his future and put the war in his past. When his best friend and squad leader, Sergeant Kurt Timms, took a Taliban bullet because of bad intel, Alan made a promise to his dying friend. He would come here to see the rugged mountains that were Kurt’s boyhood stomping grounds. But deep in a trackless canyon, miles from any trail, Alan finds something else: the body of a dead man at the foot of a cliff, an ancient cave…and a passageway too intriguing to ignore.

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.

Idealistic navy Lieutenant Jacob Grimm just wanted to honor his mother's sacrifice in the last great war. When he's forced to return fire and destroy a squadron of ships to save his own, he thinks he's the hero.... Until they discover the ships are full of children. Disgraced and denied promotion, Jacob's career is over. That is until the head of ONI needs a disposable officer to command a battered destroyer on the rim.

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.

Andross Silver has a nice life...until he is pushed off a building and finds himself in a new world. Reborn into a family that wants to kill him, gifted with a System, and armed with determination, Andross must rise to the challenges of a strange new world he suddenly finds himself in. His only blessing is the Mark of the Crijik, a magical gift from a divine being that bestows great powers onto those that possess it. It also kills them at the age of 25. Andross must master magic to help him carve a path to greatness.

Rear Admiral James Tecumseh barely survived his last mission against the Alliance of Free Stars with his reputation and life intact. Under a cloud of suspicion, he has been assigned to a quiet sector far from the front of the Terran Commonwealth’s war with the Castle Federation and its allies.

Thomas Nelson has traveled back in time to help George Washington win the American Revolution and change the course of history for the better. After completing a secret task to help put the American colonists on track to win their revolution, Thomas returns, believing his work is finished. General Washington promised that Thomas, the Pale Rider, could retire once he returned to the colonies.

Thomas Nelson has traveled back in time to help George Washington survive the beginning of the American Revolution and change the course of history for the better. And he accomplishes that mighty task. But he’s not finished. Instead of riding off into anonymity to live with the woman he’s fallen in love with in 1777, General Washington has a request for Thomas, the Pale Rider, one that would alter the outcome of the war for the better. The French, and their support of the colonists, is at stake.

On July 2057, all life on Earth was wiped out by thousands of meteor strikes. Two men survived because they happened to be in the seed vault on Svalbard Island. An alien from a civilization far more advanced than our own sends them back in time to AD 70 with all the supplies that could be found in the seed vault. Will they be able to change the timeline enough that humanity can survive the extinction event of 2057?

In these 34 intriguing episodes, leading historian Christopher Andrew rewrites history, considering what might have transpired if pivotal events had turned out differently. By altering a single, plausible fact, he explores alternative futures where the Spanish Armada landed on English soil, Pontius Pilate freed Jesus, the Nazis occupied Britain and many more.

Adam was a TV star and teen idol in the 1950s and ‘60s. Everyone expected him to become a movie star, but his career fizzled out after the end of his series. In 2021, he’s an old man in his 80s, giving VIP tours at Paramount Studios, when something extraordinary happens and he finds himself in a place that shouldn’t exist. His situation becomes increasingly bizarre, and when he finally returns home, it’s no longer 2021, but 1961, the year his series ended. Adam Bluestone has a unique opportunity to live his life again.

Apparently, time-travel spells have a sense of humor and don’t take direction well. Mei Li could’ve done with knowing that beforehand and fully blames Shunlei for not forewarning her. Instead of going back a few years to rescue the missing tomes, Mei Li finds herself thousands of years in the past, with the original events she needs to learn about still 10 years into the future. She is stuck in a hurry-up-and-wait pattern she doesn’t appreciate.

Time travelers Ray Burton and Natalie O’Brien were living peacefully in 1958 England. Now they are missing. What has happened to them, and why are travelers throughout time being targeted for elimination? In the thrilling sequel to the Amazon best seller, Yestertime, the impossible has happened. And now, some people will do anything to stop it.

Nothing is trickier than the truth. All Loki the trickster god of Asgard wants is a peaceful life where he's free to stir up a bit of harmless mischief. But when he's struck by a painful vision of blood, ash, and death he knows his fun has run out. Refusing to have his life obliterated by some stuffy prophecy, Loki feels he must save Asgard. Except the gods stand in his way. They don't trust the God of Lies, which means his only hope is to return to Odin, the man he wished to forget thanks to their complicated history. 

From the author of the international bestseller The Squeamish Vampire and the DC Coven series comes a time travel story where a young man with MacGyver-like skills must face ruthless ancient warriors. Good thing his companion is a mysterious young woman with exceptional fighting skills. Too bad she has her own agenda. 

Then: First Lieutenant Sean Elliott and nine other mixed-service US soldiers on a convoy in Afghanistan suddenly found themselves and their MRAP vehicle thrown back to Earth’s Paleolithic Age. And they were not alone. Displaced Romans, Neolithic Europeans, and more showed up as well. Some would be allies. Some became deadly foes. Now: Scientists from an almost unimaginably far future need the survivors’ advice and support to reconnoiter and ultimately recover other groups displaced in time.

Michael, a professor of particle physics, has discovered a way to pierce the veil of time and space, but in so doing, he’s unwittingly opened Pandora’s box. Is it possible to undo what a future version of yourself has done, or is the world doomed to the chaos that’s been loosed on the world?

Quinn Black is having the worst day ever...over and over again. The same car blocking his driveway, the same horrific accident he witnesses, the same cop that keeps preventing him from saving his boss from dying in it, and the same memory of a girl from his past that gets sharper each time. Then he realizes he has the power to travel through time and change the future. Could he prevent terrorist attacks? Natural disasters? The deaths of friends? Before long, Quinn is thrust into the greatest race in human history.

In the 21st century, Germany's Third Reich continues to thrive after its victory in World War II - keeping most of Europe and North America under its heel. But within the heart of the Nazi regime, a secret lives. Under a perfect Aryan facade, Jews survive - living their lives, raising their families, and fearing discovery.... 

Captain Arturo Sanders was having a bad day. First the routine destruction of some ancient automatic defense batteries became a disaster, when his ship’s screens failed, and he had no choice to abandon ship. Then he had to rescue two left behind crew people, which meant he missed the main shuttle evacuation leaving him and his two companions in a shuttle on their own at the rear.

Staff Sergeant Henry Wells feels like he's seen it all. When he finds himself sitting on a month of leave after his latest deployment, the Green Beret spends it in the Montana badlands with his brother. He hasn't seen his paleontologist brother in years, but digging up old bones and cooking for grad students seems like a welcome break from the endless training and chaos of his last 10 years.