On a planet that was once part of a vast interstellar civilization, humans survive on the edge of barbarism amid the ruins of the once-great empire.

Marc Vitrac was born in the early 1960's, about the time the first interplanetary probes delivered the news that Mars and Venus were teeming with life, even human life. Now, in 1988, Marc has been assigned to the US-Commonwealth base on Venus. But there are flies in this ointment - and not only the Venusian dragonflies, with their yard-wide wings....Extravagant and effervescent, The Sky People is alternate-history SF adventure at its best.

During a perfect spring evening on Nantucket, a violent storm erupts and a dome of crawling, colored fire blankets the island. When the howling winds subside and the night skies clear, the stars appear to have shifted. The mainland has become a wilderness of unbroken forest, where tools of bronze and stone litter the beaches, and primitive natives scatter in terror.

Everyone could see it coming. But one man could do something about it. Oh, he couldn't avert the nuclear holocaust, but a scientist in Austria, ruthlessly using billions of research dollars for his own purposes, set himself up and out: he created a time machine, and filled a warehouse with low-tech survival gear. Too bad he didn't get to use it himself. Instead, a team of American grad students, led by their professor, is sent back to the late Roman Empire. Even though they are experts in this time and place, they are about to realize that books and actual experience are very different things.

In 1912, just months before the election, President Taft dies suddenly, and Teddy Roosevelt wastes no time in grabbing power as he wins another term as president. By force of will, he ushers the United States into a new, progressive era with the help of the Black Chamber, the mysterious spy organization watching his back.

In the mid-1870s, a violent spray of comets hits Earth, decimating cities, erasing shorelines, and changing the world's climate forever. And just as Earth's temperature dropped, so was civilization frozen in time. Instead of advancing technologically, humanity had to piece itself back together.... In the 21st century, boats still run on steam, messages arrive by telegraph, and the British Empire, with its capital now in Delhi, controls much of the world.

In Northern India, the Malwa have created an empire of unexampled evil. Guided or possessed by an intelligence from beyond time, with new weapons, old treachery, and an implacable will to power, the Malwa will sweep over the whole Earth. Only three things stand between the Malwa and their plan of eternal domination: the empire of Rome in the East, Byzantium; a crystal with vision; and a man named Belisarius, the greatest commander Earth has ever known....

The Change occurred when an electrical storm centered over the island of Nantucket produced a blinding white flash that rendered all electronic devices and fuels inoperable - and plunged the world into a dark age humanity was unprepared to face....

From "the master of alternate history" comes a new trilogy that reimagines a mid-20th century in which General MacArthur, without bothering to consult President Truman, detonates nuclear warheads in several Manchurian cities after China enters the Korean War. In his acclaimed novels of alternate history, Harry Turtledove has scrutinized the twisted soul of the 20th century, from the forces that set World War I in motion to the rise of fascism in the decades that followed.

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.

Twice before, mysterious cosmic catastrophes have sent portions of the Earth across space and back in time - first, with the Grantville Disaster in West Virginia, and then again with a maximum security prison in southern Illinois. Now, the planet is struck with yet another such cataclysm, whose direct impact falls upon the Queen of the Sea, a cruise ship in the Caribbean. When the convulsions subside, the crew and passengers of the ship discover that they have arrived in a new and frightening world. They are in the Mediterranean now, not the Caribbean.

Pressed into service when World War II breaks out in the Pacific, the USS Walker---a Great-War vintage "four-stacker" destroyer---finds itself in full retreat from pursuit by Japanese battleships. Its captain, Lieutenant Commander Matthew Patrick Reddy, knows that he and his crew are in dire straits. In desperation, he heads Walker into a squall, hoping it will give them cover---and emerges somewhere else.

Former Speaker of the House Newt Gingrich and veteran author William R. Forstchen combine their talents in this powerful and rousing alternate history of the most legendary Civil War clash.

In 1914, they called it The Great War, and few could imagine anything worse. For nearly three decades, a peace forged in blood and fatigue has held sway in North America. Now, Japan dominates the Pacific, the Russian Tsar rules Alaska, and England, under Winston Churchill, chafes for a return to its former glory. But behind the façade of world order, America is a bomb waiting to go off. Jake Featherston, the megalomaniacal leader of the Confederate States of America, is just the man to light the fuse.

The Cthulhu Mythos is one of the 20th century's most singularly recognizable literary creations. Initially created by H. P. Lovecraft and a group of his amorphous contemporaries (the so-called "Lovecraft Circle"), The Cthulhu Mythos story cycle has taken on a convoluted, cyclopean life of its own. Some of the most prodigious writers of the 20th century, and some of the most astounding writers of the 21st century have planted their seeds in this fertile soil. The Book of Cthulhu harvests the weirdest and most corpulent crop of these modern mythos tales.