Alternative History Science Fiction Books

  • Keywords: NEW Novel ofChange Book War A M Protectors

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    The Protector’s War – S.M. Stirling – NEW Book Other S.M. Stirling Books click here Other The Emberverse series or "The Change" click here Paperback – the second Book in "The Change" Eight years after the change Clan Mackenzie and the Bearkillers led by Juniper Mackenzie and Mike Havel respectively have carved sections out in the Willamette Valley for their groups. They have become bitter rivals with the Portland Protective Association (PPA) led by the Armingers. The Barons of the PPA constantly violate ceasefires between the three warring factions. During one of their raids Eddie Liu Baron and Marchwarden of the PPA is confronted by a small group of Mackenzies led by Eil click here…..
  • Keywords: Paperback Harry

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here “A profoundly thoughtful masterpiece of alternate history.” –Booklist It is 1943 the third summer of the new war between the Confederate States of America and the United States a war that will turn on the deeds of ordinary soldiers extraordinary heroes and a colorful cast of spies politicians rebels and everyday citizens. The CSA president Jake Featherston seems to have greatly miscalculated the North’s resilience. But as new demonic tools of killing are unleashed secret wars are unfolding. The U.S. government in Philadelphia has proof that the tyrannic click here…..
  • Keywords: Harry Paperback ofDarkness Turtledove Rulers

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here In the fourth volume of this series–loosely based on events from World Wars I and II–the war for Derlavai builds as the mages of Kuusamo aided by their former rivals from Lagoas work to create a newer form of magic that will change the course of the war.About the AuthorTurtledove was born in Los Angeles California he grew up in nearby Gardena his parents Romanian immigrants first settled in Winnipeg Canada before making their permanent home on the US West Coast. After dropping out during his freshman year at Caltech he attended UCLA where he received a Ph.D. in Byzantine his more here…..
  • Keywords: Turtledove Blood Iron

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here AMERICAN EMPIRE: BOOK ONE Twice in the last century brutal war erupted between the United States and the Confederacy. Then after a generation of relative peace The Great War exploded worldwide. As the conflict engulfed Europe the C.S.A. backed the Allies while the U.S. found its own ally in Imperial Germany. The Confederate States France and England all fell. Russia self-destructed and the Japanese seeing that the cause was lost retired to fight another day. The Great War has ended and an uneasy peace reigns around most of the world. But nowhere is the peace more fragile than more…..
  • Keywords: Settling Engagement Return

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here Harry Turtledove’s remarkable alternative history novels brilliantly remind us of how fragile the thread of time can be and offer us a world of “what if.” Drawing on a magnificent cast of characters that includes soldiers generals lovers spies and demagogues Turtledove returns to an epic tale that only he could tell-the story of a North American continent separated into two bitterly opposed nations that stands on the verge of exploding once again. In 1914 they called it The Great War and few could imagine anything worse. For nearly three decades a peace forged in blood and fat extra info…..
  • Keywords: Contact Colonization Paperback Turtledove Harry

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    Get other Harry Turtledove here Get other Alternative History Books here In the extraordinary Worldwar tetralogy set against the backdrop of World War II Harry Turtledove the “Hugo-winning master of alternate SF” (Publishers Weekly) wove an explosive saga of world powers locked in conflict against an enemy from the stars. Now he expands his magnificent epic into the volatile 1960s when the space race is in its infancy and humanity must face its greatest challenge: alien colonization of planet Earth. Yet even in the shadow of this inexorable foe the United States the Soviet Union and Nazi Germany are unable to relinquish their hostilities and unite against a massive new wave of extraterrestri extra info…..
  • Keywords: Paperback Harry TiltingBalance Worldwar

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    Get other Harry Turtledove here Get other Alternative History Books here NO ONE COULD STOP THEM– NOT STALIN NOT TOGO NOT CHURCHILL NOT ROOSEVELT . . . The invaders had cut the United States virtually in half at the Mississippi vaporized Washington D.C. devastated much of Europe and held large parts of the Soviet Union under their thumb. But humanity would not give up so easily. The new world allies were ruthless at finding their foe’s weaknesses and exploiting them. Whether delivering supplies in tiny biplanes to partisans across the vast steppes of Russia working furiously to understand the enemy’s captured radar in England or battling house to house on the streets of Chicago humankind wou more information…..
  • Keywords: ofLegion Turtledove

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here In Videssos the city tribune Marcus Scaurus was bored. The legion that had been magically transported to this strange world was far away. But the Emperors niece Alypia was near — and willing. When their secret trysts were betrayed Emperor Thorisin Gavras was forced to condemn Marcus as a traitor — but with a promise of freedom and Alypia if he could reclaim a rebel province from a fanatic usurper with no military aid. With only centurion Gaius Philippus Marcus set out to try the seemingly impossible task. But the fates conspired against them driving them further westward int extra info…..
  • Keywords: Harry Turtledove Hardcover

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here 1945: Russian troops have entered Berlin and are engaged in a violent orgy of robbery rape and revenge! Wehrmacht officer Hasso Pemsel a career soldier on the losing end of the greatest war in history flees from a sniper’s bullet finding himself hurled into a mysterious fantastic world of wizards dragons and unicorns!About the AuthorTurtledove was born in Los Angeles California he grew up in nearby Gardena his parents Romanian immigrants first settled in Winnipeg Canada before making their permanent home on the US West Coast. After dropping out during his freshman year at Calt click here…..
  • Keywords: Turtledove Man

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    Get other Harry Turtledove here Get other Alternative History Books here What if V-E Day hadn’t ended World War II in Europe? What if instead the Allies had to face a potent even fanatical postwar Nazi resistance? Such a movement based in the fabled Alpine Redoubt was in fact a real threat ultimately neutralized by Germany’s flagging resources and squabbling officials. But had SS Obergruppenfuhrer Reinhard Heydrich the notorious Man with the Iron Heart not been assassinated in 1942 fate might have taken a different turn. In this imagined world Nazi forces launch a guerrilla war using the quick and dirty tactics of terrorism to overturn what seemed to be a decisive victory. Suddenly the Allie more here…..
  • Keywords: Harry

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here Since the Roman legion had been mysteriously transported to this world of magic tribune Marcus Scaurus had served the rulers of war-torn Videssos well. He had been largely responsible for ousting the Pretender and putting Thorish Gavras on the throne. That of course made him a hero. Rome or Videssos however Fortune was a fickle goddess. Now he and the legion were returning in triumph to Videssos the city after defeating a well-entrenched army of rebel mercenaries. But Marcus betrayed by the one closest to him was returning to be seized dragged before the Emperor and questioned find out more…..
  • Keywords: Breakthroughs

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    Get other Harry Turtledove here Get other Alternative History Books here Is it the war to end all wars–or war without end? What began as a conflict in Europe when Germany unleashed a lightning assault on its enemies soon spreads to North America as a long-simmering hatred between two independent nations explodes in bloody combat. Twice in fifty years the Confederate States of America had humiliated their northern neighbor. Now revenge may at last be at hand. Into this vast seething cauldron plunges a new generation of weaponry changing the shape of war and the balance of power. While the Confederate States are distracted by an insurgency of African Americans who dream of establishing their more details…..
  • Keywords: Paperback

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    Get other Harry Turtledove here Get other Alternative History Books here The “New York Times” bestselling author of alternate history looks at what might have happened if the Japanese had followed up their assault on Pearl Harbor in 1941 with an invasion and occupation of Hawaii.About the AuthorTurtledove was born in Los Angeles California he grew up in nearby Gardena his parents Romanian immigrants first settled in Winnipeg Canada before making their permanent home on the US West Coast. After dropping out during his freshman year at Caltech he attended UCLA where he received a Ph.D. in Byzantine history in 1977. His dissertation was entitled The Immediate Successors of Justinian: A Study of extra info…..
  • Keywords: War Harry Paperback Guns ofCivil

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    Get other Harry Turtledove here Get other Alternative History Books here " It is absolutely unique–without question the most fascinating Civil War novel I have ever read." Professor James M. McPherson Pultizer Prize-winning BATTLE CRY OF FREEDOM January 1864–General Robert E. Lee faces defeat. The Army of Northern Virginia is ragged and ill-equpped. Gettysburg has broken the back of the Confederacy and decimated its manpower. Then Andries Rhoodie a strange man with an unplaceable accent approaches Lee with an extraordinary offer. Rhoodie demonstrates an amazing rifle: Its rate of fire is incredible its lethal efficiency breathtaking–and Rhoodie guarantees unlimited quantitites t click here…..
  • Keywords: Accounts

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here Harry Turtledove’s remarkable alternative history novels brilliantly remind us of how fragile the thread of time can be and offer us a world of “what if.” Drawing on a magnificent cast of characters that includes soldiers generals lovers spies and demagogues Turtledove returns to an epic tale that only he could tell-the story of a North American continent separated into two bitterly opposed nations that stands on the verge of exploding once again. In 1914 they called it The Great War and few could imagine anything worse. For nearly three decades a peace forged in blood and fat more…..
  • Keywords: Turtledove Harry Paperback Down

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here “From Harry Turtledove bestselling author and critically acclaimed master of the short story comes a classic collection of science fiction tales and what-if scenarios. In narratives ranging from fantastic to oddly familiar to eerily prescient this compelling volume illustrates Turtledove’s literary skill and unbridled imagination. FORTY COUNTING DOWN: With the help of his time travel software computer genius Justin Kloster returns to the past to stop himself from making a terrible mistake-but all actions have their consequences. THE MALTESE ELEPHANT: A legendary detective find click here…..
  • Keywords: Gladiator

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    Get other Harry Turtledove here Get other Alternative History Books here In their heavily regimented Communist country the biggest excitement for a group of friends is a wargame shop called The Gladiator. When the store is shut down for teaching counterrevolutionary tactics only one staffer remains–a time trader who had been accidentally left behind.About the AuthorTurtledove was born in Los Angeles California he grew up in nearby Gardena his parents Romanian immigrants first settled in Winnipeg Canada before making their permanent home on the US West Coast. After dropping out during his freshman year at Caltech he attended UCLA where he received a Ph.D. in Byzantine history in 1977. His di extra info…..
  • Keywords: OppositionVictorious Opposition

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here Harry Turtledove’s acclaimed alternate history series began with a single question: What if the South had won the Civil War? Now seventy years have passed since the first War Between the States. The North American continent is locked in a battle of politics economies and moralities. In a world that has already felt the soul-shattering blow of the Great War North America is the powder keg that could ignite another global conflict–complete with a new generation of killing machines. “Freedom! Freedom! Freedom!” In 1934 the chant echoes across the Confederate States of America a find out more…..
  • Keywords: War

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    Get other Harry Turtledove here Get other Alternative History Books here When the Great War engulfed Europe in 1914 the United States and the Confederate States of America bitter enemies for five decades entered the fray on opposite sides: the United States aligned with the newly strong Germany while the Confederacy joined forces with their longtime allies Britain and France. But it soon became clear to both sides that this fight would be different — that war itself would never be the same again. For this was to be a protracted global conflict waged with new and chillingly efficient innovations — the machine gun the airplane poison gas and trench warfare. Across the Americas the fighting r more…..
  • Keywords: Places Harry Turtledove Atlantis Other Hardcover

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    Get other Harry Turtledove here Get other Alternative History Books here This one-of-a-kind collection from the ‘New York Times’-bestselling ‘maven of alternate history’ (‘San Diego Union-Tribune’) includes amazing stories of ancient eras historical figures mysterious events and out-of-this-world adventure.A one-of-a-kind collection from the New York Times bestselling ‘maven of alternate history.’ ( San Diego Union- Tribune ) A famous naturalist seeks a near-extinct species of bird found only on the rarest of lands in ‘Audubon in Atlantis.’ A young American on a European holiday finds himself storming an enchanted German castle in ‘The Catcher in the Rhine.’ The philosopher Sokrates plays a more details…..
  • Keywords: inHigh Philp Dick K Man NEW

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    The Man in the High Castle – Philip K Dick – NEW Novel for other Philip K Dick Science Fiction click here Giuseppe Zangara’s assassination of U.S. President Franklin D. Roosevelt in 1933 led to the weak governments of FDR’s Vice President John Nance Garner and of the Republican John W. Bricker in 1940; both politicians failed to surmount the Great Depression and maintained the country’s isolationist policy against participating in the Second World War; thus the U.S. had insufficient military capabilities to assist the UK and the USSR against Nazi German aggression and itself against Japanese Imperial aggression. In 1941 the Nazis conquered the USSR and then exterminated most of its Slavic pe click here…..
  • Keywords: Turtledove Harry

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    Get other Harry Turtledove here Get other Alternative History Books here A novel that reveals the human face of war while simultaneously riding the twists and turns that make up the great acts of history “Hitler’s War” is the beginning of an exciting new alternate history saga.About the AuthorTurtledove was born in Los Angeles California he grew up in nearby Gardena his parents Romanian immigrants first settled in Winnipeg Canada before making their permanent home on the US West Coast. After dropping out during his freshman year at Caltech he attended UCLA where he received a Ph.D. in Byzantine history in 1977. His dissertation was entitled The Immediate Successors of Justinian: A Study of t more here…..
  • Keywords: SwitchWar Big Turtledove Early Hardcover Harry Came That

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    Get other Harry Turtledove here Get other Alternative History Books here In this extraordinary World War II alternate history master storyteller Harry Turtledove begins with a big switch: what if Neville Chamberlain instead of appeasing Hitler had stood up to him in 1938? Enraged Hitler reacts by lashing out at the West promising his soldiers that they will reach Paris by the new year. They dont. Three years later his genocidal apparatus not fully in place Hitler has barely survived a coup while Jews cling to survival. But England and France wonder whether the war is still worthwhile. Weaving together a cast of characters that ranges from a brawling American fighter in the Abraham Lincoln Br more here…..
  • Keywords: Paperback Conroy Robert

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    Get other Fantasy Science Fiction Books hereGet other Robert Conroy here Get other Alternative History Books here The year is 1901. Germany’s navy is the second largest in the world; their army the most powerful. But with the exception of a small piece of Africa and a few minor islands in the Pacific Germany is without an empire. Kaiser Wilhelm II demands that the United States surrender its newly acquired territories: Guam Puerto Rico Cuba and the Philippines. President McKinley indignantly refuses so with the honor and economic future of the Reich at stake the Kaiser launches an invasion of the United States striking first on Long Island. Now the Americans with their army largely disbanded click here…..
  • Keywords: Breath

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    Get other Harry Turtledove here Get other Alternative History Books here Once the great Glacier had enclosed the Raumsdalian Empire. Now it’s broken open and Count Hamnet Thyssen faces a new world as he leads an exploration of the new territory in hopes of finding the legendary Golden Shrine in this sequel to “Beyond the Gap.”About the AuthorTurtledove was born in Los Angeles California he grew up in nearby Gardena his parents Romanian immigrants first settled in Winnipeg Canada before making their permanent home on the US West Coast. After dropping out during his freshman year at Caltech he attended UCLA where he received a Ph.D. in Byzantine history in 1977. His dissertation was entitled T more…..
  • Keywords: Paperback Turtledove EastWar West Came

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    Get other Harry Turtledove here Get other Alternative History Books here BONUS: This edition contains an excerpt from Harry Turtledoves The War That Came Early: The Big Switch. What if British prime minister Neville Chamberlain had defied Hitler? What if the Munich Accord had gone unsigned and Nazi Germany had launched its bid for conquest sooner? How would World War II have unfoldedmdash;and with what consequences? Dean of alternate history Harry Turtledove has the stunning answers in his breathtaking sequel to Hitlers War . In the wake of Hitlers bold invasion of Czechoslovakia nations turn against nations old enemies form new alliances and ordinary men and women confront extraordinary lif more…..
  • Keywords: AfterDownfall Harry Turtledove

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here 1945: Russian troops have entered Berlin and are engaged in a violent orgy of robbery rape and revenge. Wehrmacht officer Hasso Pemsel a career soldier on the losing end of the greatest war in history flees from a sniper’s bullet finding himself hurled into a mysterious fantastic world of wizards dragons and unicorns. There he allies himself with the blond-haired blue-eyed Lenelli and Velona their goddess in human form offering them his knowledge of warfare and weaponry in their genocidal struggle against a race of diminutive swarthy barbarians known as Grenye. But soon the sa more details…..
  • Keywords: Shrine Golden

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here Continuing the alternate-Bronze-Age epic begun inBeyond the Gap: The glaciers came and covered the world with ice. Now they are in retreat. North of the city of Nidaros north of the forest north of the steppes where the nomadic Bizogots hunt a gap has opened in the ice-wall. And down through that gap come the men who call themselves “Rulers.” Their terrifying cavalry rides wooly mammoths. Their bows can shoot arrows farther than those of the southerners. Their wizards wield power that neither the shamans of the Bizogots nor the wizards of Raumsdalian Empire can match a magic t more here…..
  • Keywords: Turtledove Places Harry High In

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    Get other Harry Turtledove here Get other Alternative History Books here In the 21st-century Kingdom of Versailles the roads are terrible and Paris is a dirty little town. Serfdom and slavery are both common and no one thinks that’s wrong. Why should they? Most people spend their lives doing backbreaking farm work anyway. But teenaged Khadija daughter of a prosperous family of Moorish business travellers is unfazed. That’s because Khadija is really Annette Klein from 21st-century California and her whole family are secret agents of Crosstime Traffic trading for commodities to send back to our own timeline. Now it’s time for Annette and her family to go home for the start of another school ye more here…..
  • Keywords: Turtledove

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    Get other Harry Turtledove here Get other Alternative History Books here From a “New York Times” bestselling author–and “the maven of alternate history” (“San Diego Union-Tribune”)–comes the thrilling follow-up to “Days of Infamy.”About the AuthorTurtledove was born in Los Angeles California he grew up in nearby Gardena his parents Romanian immigrants first settled in Winnipeg Canada before making their permanent home on the US West Coast. After dropping out during his freshman year at Caltech he attended UCLA where he received a Ph.D. in Byzantine history in 1977. His dissertation was entitled The Immediate Successors of Justinian: A Study of the Persian Problem and of Continuity and Chan more…..
  • Keywords: Golden Hardcover Turtledove Harry

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here The glaciers had covered the world with ice. But when a gap opens in the ice-wall the men who call themselves Rulers emerge. “The Golden Shrine” continues the alternate Bronze Age epic begun in “Beyond the Gap.”About the AuthorTurtledove was born in Los Angeles California he grew up in nearby Gardena his parents Romanian immigrants first settled in Winnipeg Canada before making their permanent home on the US West Coast. After dropping out during his freshman year at Caltech he attended UCLA where he received a Ph.D. in Byzantine history in 1977. His dissertation was entitled T more…..
  • Keywords: Turtledove Harry Hardcover

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here Harry Turtledove Capclave 2009s Guest of Honor is the master of alternate history and now with Reincarnations a limited edition celebrating his achievements he explores worlds that might have been. Featuring six previously-uncollected stories an original story story notes and an introduction by Sheila Williams the editor of Asimovs Science Fiction Magazine.About the AuthorTurtledove was born in Los Angeles California he grew up in nearby Gardena his parents Romanian immigrants first settled in Winnipeg Canada before making their permanent home on the US West Coast. After dropp extra info…..
  • Keywords: A ofChange A

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    A Meeting at Corvallis – S.M. Stirling – NEW Book Other S.M. Stirling Books click here Other The Emberverse series or "The Change" click here Paperback – the third Book in "The Change" series Mike (Lord Bear) and Signe Havel of the Bearkillers and Juniper Mackenzie of Clan Mackenzie travel to Corvallis a nuetral city-state to convince them to join with them in resisting the PPA. Meanwhile the Dunedain Rangers have captured a major knight of the PPA leading a band of raiders into their territory and take him to Corvallis for his trial. Sandra Arminger and her private servant/assassin Tiphaine however also travel to Corvallis to speak in defense of the PPA. Sandra sends Tip find out more…..
  • Keywords: Colonization

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    Get other Harry Turtledove here Get other Alternative History Books here “ONE OF THE MOST MEMORABLE SERIES OF ALTERNATIVE HISTORY NOVELS EVER WRITTEN.” -”Science Fiction Age World War II has evolved into decades of epic struggles and rebellions targeting the aliens known as the Race. As the 1960s begin one of Earth’s great powers launches a nuclear strike against the Race’s colonization fleet-and the merciless invaders find themselves confronting a far more complex and challenging species than any they have encountered before. Ultimately only superior firepower may keep Earth under the Empire’s control-or it may destroy the world. While uprisings and aftershocks of war shake the planet one n more…..
  • Keywords: Paperback Misplaced Legion

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    Get other Fantasy Science Fiction Books hereGet other Harry Turtledove here Get other Alternative History Books here As they faced one another in a duel of survival the Roman tribune Marcus Scaurus held the spell-scribed sword of a Druid priest and the Celtic chieftain Viridovix held a similar sword bespelled by a rival Druid sorcerer. At the moment they touched the two found themselves under a strange night sky where no stars were familiar and where Gaul and Rome were unknown. They were in an outpost of the embattled Empire of Videssos–in a world where magic and dark sorcery would test their skill and courage as no Roman legion had ever been tested before.About the AuthorTurtledove was bor more information…..

Antiquity and Medieval

The earliest example of an alternate history is Book IX, sections 17–19, of Livy’s History of Rome from Its Foundation. Livy contemplated an alternative 4th Century BC in which Alexander the Great expanded his empire westward instead of eastward; Livy asked, “What would have been the results for Rome if she had been engaged in war with Alexander?”

Joanot Martorell’s 1490 epic romance “Tirant lo Blanc”, written when the loss of Constantinople to the Turks was still a recent and traumatic memory to Christian Europe, tells the story of the valiant knight Tirant The White from Brittany who gets to the embattled remnant of the Byzantine Empire, becomes a Megaduke and commander of its armies, and manages to fight off the invading Ottoman armies of Mehmet II, save the city from Islamic conquest, and even chase the Turks deeper into lands they had conquered before.

One of the earliest works of alternate history published in large quantities for the reception of a popular audience, may be the French Louis Geoffroy’s Histoire de la Monarchie universelle: Napoléon et la conquête du monde (1812-1832) (History of the Universal Monarchy: Napoleon And The Conquest Of The World) (1836), which imagines Napoleon’s First French Empire victorious in the French invasion of Russia in 1811 and in an invasion of England in 1814, later unifying the world under Bonaparte’s rule.

The first novel-length alternate history in English would seem to be Castello Holford’s Aristopia (1895). While not as nationalistic as Louis Geoffroy’s Napoléon et la conquête du monde, 1812–1823, Aristopia is another attempt to portray a utopian society. In Aristopia, the earliest settlers in Virginia discover a reef made of solid gold and are able to build a Utopian society in North America.

A number of alternate history stories and novels appeared in the late 1800s and early 1900s (see, for example, Charles Petrie’s If: A Jacobite Fantasy [1926]). In 1931, British historian Sir John Squire collected a series of essays from some of the leading historians of the period in the anthology If It Had Happened Otherwise. In this work, scholars from major universities as well as important non-university-based authors turned their attention to such questions as “If the Moors in Spain Had Won” and “If Louis XVI Had Had an Atom of Firmness”. The essays range from serious scholarly efforts to Hendrik Willem van Loon’s fanciful and satiric portrayal of an independent 20th century Dutch city state on the island of Manhattan. Among the authors included were Hilaire Belloc, André Maurois, and Winston Churchill.

One of the entries in Squire’s volume was Churchill’s “If Lee Had Not Won the Battle of Gettysburg”, written from the viewpoint of a historian in a world where the Confederacy had won the American Civil War, considering what would have happened if the North had been victorious (in other words, a character from an alternate world imagining a world more like the real one we live in, although not necessarily getting all the details right). This kind of speculative work which posts from the point of view of an alternate history is variously known as a “recursive alternate history”, a “double-blind what-if” or an “alternate-alternate history”.

Another example of alternate history from this period (and arguably the first to explicitly posit cross-time travel from one universe to another as anything more than a visionary experience) is H.G. Wells’ Men Like Gods (1923) in which several Englishmen are transferred via an accidental encounter with a cross-time machine into an alternate universe featuring a seemingly pacifistic and utopian Britain. When the Englishmen, led by a satiric figure based on Winston Churchill, try to seize power, the utopians simply point a ray gun at them and send them on to someone else’s universe. Wells describes a multiverse of alternative worlds, complete with the paratime travel machines that would later become popular with U.S. pulp writers, but since his hero experiences only a single alternate world this story is not very different from conventional alternate history. The 1930s would see alternate history move into a new arena. The December 1933 issue of Astounding published Nat Schachner’s “Ancestral Voices,” quickly followed by Murray Leinster’s “Sidewise in Time”. While earlier alternate histories examined reasonably straight-forward divergences, Leinster attempted something completely different. In his “world gone mad”, pieces of Earth traded places with their analogs from different timelines. The story follows Professor Minott and his students from the fictitious Robinson College as they wander through analogs of worlds that followed a different history.

This period also saw the publication of the time travel novel Lest Darkness Fall by L. Sprague de Camp where an American academic travels to the Italy of the Ostrogoths at the time of the Byzantine invasion led by Belisarius. De Camp’s work is concerned with the historical changes wrought by his time traveler, Martin Padway, thereby making the work an alternate history. Padway is depicted as making permanent changes and implicitly forming a new time branch.

When a story’s assumptions about the nature of time travel lead to the complete replacement of the visited time’s future rather than just the creation of an additional time line, the device of a “time patrol” is often used. Such an agency has the grim task of saving civilization every day, every hour, with patrol members—depicted most notably in Poul Anderson’s “Time Patrol”—racing uptime and downtime to preserve the “correct” history. This is eventually revealed to be the one in which humanity transforms itself into a benevolent super-species that, amongst other achievements, creates time travel to ensure its own existence.

This can lead to terrible moral dilemmas. In Delenda Est, the interference of time-travelling outlaws causes Carthage to win the Second Punic War and destroy Rome. As a result, there is a completely different Twentieth Century — “not better or worse, just completely different”. The hero, Patrol Agent Manse Everard, must return to that period, fight the outlaws and change history back, restoring his (and our) familiar history — but only at the price of totally destroying the world which has taken its place, and which is equally deserving of existence. The stakes are the highest imaginable: billions of lives balanced against other billions of lives, for one man to decide. “Risking your neck in order to negate a world full of people like yourself” is how the hero describes what he eventually undertakes.

H.G. Wells’ “cross-time”/”many universes” variant was fully developed by De Camp in his 1940 short story “The Wheels of If” (Unknown Fantasy Fiction, October 1940), in which the hero is repeatedly shifted from one alternate history to another, each more remote from our own than the last. This subgenre was used early on for purposes far removed from quasi-academic examination of alternative outcomes to historical events. Fredric Brown employed it to satirize the science fiction pulps and their adolescent readers—and fears of foreign invasion—in the classic What Mad Universe (1949). In Clifford Simak’s Ring Around the Sun (1953), the hero ends up in an alternate earth of thick forests in which humanity never developed but where a band of mutants is establishing a colony; the story line appears to frame the author’s anxieties regarding McCarthyism and the Cold War Also in the late 1940s and the 1950s, however, writers such as H. Beam Piper, Sam Merwin, Jr. and Andre Norton wrote thrillers set in a multiverse in which all alternate histories are co-existent and travel between them occurs via a technology involving portals and/or paratime capsules. These authors established the convention of a secret paratime trading empire that exploits and/or protects worlds lacking the paratime technology via a network of James Bond-style secret agents (Piper called them the “paratime police”).

This concept provided a convenient framing for packing a smorgasbord of historical alternatives (and even of timeline “branches”) into a single novel, either via the hero chasing or being chased by the villain(s) through multiple worlds or (less artfully) via discussions between the paratime cops and their superiors (or between paratime agents and new recruits) regarding the histories of such worlds. The paratime theme is sometimes used without the police; Poul Anderson dreamed up the Old Phoenix tavern as a nexus between alternate histories. A character from a modern American alternate history Operation Chaos can thus appear in the English Civil War setting of A Midsummer’s Tempest. In this context, the distinction between an alternate history and a parallel universe with some points in common but no common history may not be feasible, as the writer may not provide enough information to distinguish.

Paratime thrillers published in recent decades often cite the many-worlds interpretation of quantum mechanics (first formulated by Hugh Everett III in 1957) to account for the differing worlds. Some science fiction writers interpret the splitting of worlds to depend on human decision-making and free will, while others rely on the butterfly effect from chaos theory to amplify random differences at the atomic or subatomic level into a macroscopic divergence at some specific point in history; either way, science fiction writers usually have all changes flow from a particular historical point of divergence (often abbreviated ‘POD’ by fans of the genre). Prior to Everett, science-fiction writers drew on higher dimensions and the speculations of P. D. Ouspensky to explain their characters’ cross-time journeys.

While many justifications for alternate histories involve a multiverse, the “many world” theory would naturally involve many worlds, in fact a continually exploding array of universes. In quantum theory, new worlds would proliferate with every quantum event, and even if the writer uses human decisions, every decision that could be made differently would result in a different timeline. A writer’s fictional multiverse may, in fact, preclude some decisions as humanly impossible, as when, in Night Watch, Terry Pratchett depicts a character informing Vimes that while anything that can happen, has happened, nevertheless there is no history whatsoever in which Vimes has ever murdered his wife. When the writer explicitly maintains that all possible decisions are made in all possible ways, one possible conclusion is that the characters were neither brave, nor clever, nor skilled, but simply lucky enough to happen on the universe in which they did not choose the cowardly route, take the stupid action, fumble the crucial activity, etc.; few writers focus on this idea, although it has been explored in stories such as Larry Niven’s All the Myriad Ways, where the reality of all possible universes leads to an epidemic of suicide and crime because people conclude their choices have no moral import.

In any case, even if it is true that every possible outcome occurs in some world, it can still be argued that traits such as bravery and intelligence might still affect the relative frequency of worlds in which better or worse outcomes occurred (even if the total number of worlds with each type of outcome is infinite, it is still possible to assign a different measure to different infinite sets). The physicist David Deutsch, a strong advocate of the many-worlds interpretation of quantum mechanics, has argued along these lines, saying that “By making good choices, doing the right thing, we thicken the stack of universes in which versions of us live reasonable lives. When you succeed, all the copies of you who made the same decision succeed too. What you do for the better increases the portion of the multiverse where good things happen.” This view is perhaps somewhat too abstract to be explored directly in science fiction stories, but a few writers have tried, such as Greg Egan in his short story The Infinite Assassin, where an agent is trying to contain reality-scrambling “whirlpools” that form around users of a certain drug, and the agent is constantly trying to maximize the consistency of behavior among his alternate selves, attempting to compensate for events and thoughts he experiences but he guesses are of low measure relative to those experienced by most of his other selves.

Many writers — perhaps the majority — avoid the discussion entirely. In one novel of this type, H. Beam Piper’s Lord Kalvan of Otherwhen, a Pennsylvania State Police officer, who knows how to make gunpowder, is transported from our world to an alternate universe where the recipe for gunpowder is a tightly held secret and saves a country that is about to be conquered by its neighbors. The paratime patrol members are warned against going into the timelines immediately surrounding it, where the country will be overrun, but the book never depicts the slaughter of the innocent thus entailed, remaining solely in the timeline where the country is saved. The cross-time theme was further developed in the 1960s by Keith Laumer in the first three volumes of his Imperium sequence, which would be completed in Zone Yellow (1990). Piper’s politically more sophisticated variant was adopted and adapted by Michael Kurland and Jack Chalker in the 1980s; Chalker’s G.O.D. Inc trilogy (1987–89), featuring paratime detectives Sam and Brandy Horowitz, marks the first attempt at merging the paratime thriller with the police procedural[citation needed]. Kurland’s Perchance (1988), the first volume of the never-completed “Chronicles of Elsewhen”, presents a multiverse of secretive cross-time societies that utilize a variety of means for cross-time travel, ranging from high-tech capsules to mutant powers. Harry Turtledove has launched the Crosstime Traffic series for teenagers featuring a variant of H. Beam Piper’s paratime trading empire.

The concept of a cross-time version of a world war, involving rival paratime empires, was developed in Fritz Leiber’s Change War series, starting with the Hugo Award winning The Big Time (1958); followed by Richard C. Meredith’s Timeliner trilogy in the 1970s, Michael McCollum’s A Greater Infinity (1982) and John Barnes’ Timeline Wars trilogy in the 1990s.

Such “paratime” stories may include speculation that the laws of nature can vary from one universe to the next, providing a science fictional explanation—or veneer—for what is normally fantasy. Aaron Allston’s Doc Sidhe and Sidhe Devil take place between our world, the “grim world” and an alternate “fair world” where the Sidhe retreated to. Although technology is clearly present in both worlds, and the “fair world” parallels our history, about fifty years out of step, there is functional magic in the fair world. Even with such explanation, the more explicitly the alternate world resembles a normal fantasy world, the more likely the story is to be labeled fantasy, as in Poul Anderson’s “House Rule” and “Loser’s Night.”

In both science fiction and fantasy, whether a given parallel universe is an alternate history may not be clear. The writer might allude to a POD only to explain the existence and make no use of the concept, or may present the universe without explanation to its existence.

In 1962, Philip K. Dick published The Man in the High Castle, an alternate history in which Nazi Germany and Imperial Japan won World War II. This book contained an example of “alternate-alternate” history, in that one of its characters is the author of a book in which the Allies won the war.

It was followed by Vladimir Nabokov’s Ada or Ardor: A Family Chronicle (1969), a story of incest that takes place within an alternate North America settled in part by Czarist Russia, and that borrows from Dick’s idea of “alternate-alternate” history (the world of Nabokov’s hero is wracked by rumors of a “counter-earth” that apparently is ours). Some critics believe that the references to a counter-earth suggest that the world portrayed in Ada is a delusion in the mind of the hero (another favorite theme of Dick’s novels). Strikingly, the characters in Ada seem to acknowledge their own world as the copy or negative version, calling it “Anti-Terra” while its mythical twin is the real “Terra.” Not only history but science has followed a divergent path on Anti-Terra: it boasts all the same technology as our world, but all based on water instead of electricity. When a character in Ada makes a long-distance call, all the toilets in the house flush at once to provide hydraulic power. Isaac Asimov’s short story “What If—” is about a couple who can explore alternate realities by means of a television-like device. This idea can also be found in Asimov’s 1955 novel The End of Eternity. In that novel, the “Eternals” can change the realities of the world, without people being aware of it.

The Plot Against America (2004) by Philip Roth looks at an America where Franklin D. Roosevelt is defeated in 1940 in his bid for a third term as President of the United States, and Charles Lindbergh is elected, leading to increasing fascism and anti-Semitism in the U.S. Michael Chabon, also generally not an author of speculative fiction, contributed to the genre with his 2007 novel The Yiddish Policemen’s Union. This book explores a world in which the State of Israel was destroyed in its infancy and many of the world’s Jews instead live in a small strip of Alaska set aside by the US government for Jewish settlement. The story follows a Jewish detective solving a murder case in the Yiddish-speaking city of Sitka. Stylistically, Chabon borrows heavily from the noir and detective fiction genres, while exploring social issues related to Jewish history and culture.

The late 1980s and the 1990s saw a boom in popular-fiction versions of alternate history, fueled by the emergence of the prolific alternate history author Harry Turtledove, as well as the development of the steampunk genre and two series of anthologies — the What Might Have Been series edited by Gregory Benford and the Alternate … series edited by Mike Resnick. This period also saw alternate history works by S.M. Stirling, Kim Stanley Robinson, Harry Harrison, Howard Waldrop and others. Since the late 1990s, Harry Turtledove has been the most prolific practitioner of alternate history and has been given the title “Master of Alternate History” by some. His books include the Timeline-191 series, in which Confederate States of America won the American Civil War, and the Tosev timeline series, in which aliens invaded Earth during World War II. Other stories by Turtledove include A Different Flesh, in which America was not colonized from Asia during the last ice age; In the Presence of Mine Enemies, in which the Nazis won World War II; and Ruled Britannia, in which the Spanish Armada succeeded in conquering Britain in the Elizabethan era, with William Shakespeare being given the task of writing the play that will motivate the Britons to rise up against their Spanish conquerors. He also co-authored a book with actor Richard Dreyfuss The Two Georges, in which the United Kingdom retained the American colonies, with George Washington and King George III making peace. He did a two-volume series in which the Japanese not only bombed Pearl Harbor but also invaded and occupied the Hawaiian Islands.

Perhaps the most incessantly explored theme in popular alternate history focuses on worlds in which the Nazis won World War Two. In some versions, the Nazis conquer the entire world; in others, they conquer most of the world but a “Fortress America” exists under siege. Fatherland (1992) by Robert Harris, set in Europe following the Nazi victory, has been widely praised for portraying a more believable society and series of events than most other novels set in a world after a Nazi victory. Several writers have posited points of departure for such a world but then have injected time splitters from the future or paratime travel for instance James P. Hogan’s The Proteus Operation. Norman Spinrad wrote The Iron Dream in 1972, which is intended to be a science fiction novel written by Adolf Hitler after fleeing from Europe to North America in the 1920s. Former House Speaker Newt Gingrich and William R. Forstchen have written a novel, 1945, in which the U.S. defeated Japan but not Germany in World War II, resulting in a Cold War with Germany rather than the Soviet Union. Gingrich and Fortschen neglected to write the promised sequel; instead, they wrote a trilogy about the American Civil War, starting with Gettysburg: A Novel of the Civil War, in which the Confederates win a victory at the Battle of Gettysburg.

Beginning with The Probability Broach in 1981, L. Neil Smith wrote several novels which postulated the disintegration of the U.S. Federal Government during the Whiskey Rebellion and the creation of a libertarian utopia.

A recent time traveling splitter variant involves entire communities being shifted uptime to be the founding fathers of new time branches. These communities are transported either from the present or the near-future to the past via a natural disaster, the action of technologically advanced aliens, or a human experiment gone wrong. S.M. Stirling wrote the Island in the Sea of Time trilogy, in which Nantucket Island and all its modern inhabitants are transported to Bronze Age times to become the world’s first superpower. In Eric Flint’s 1632 series, a small town in West Virginia is transported to 17th century Europe and leads a revolution against the Habsburgs. John Birmingham’s Axis of Time trilogy deals with the culture shock when a United Nations naval task force from 2021 finds itself back in 1942 helping the Allies against the Empire of Japan and the Germans (and doing almost as much harm as good in spite of its advanced weapons).

Many fantasies and science fantasies are set in a world that has a history somewhat similar to our own world, but with magic added. Since the existence of magic implies different laws of nature it is difficult to imagine a credible point of divergence: The effects of divergence would have existed throughout human history and indeed throughout all evolution of life (unless one posits sudden changes in the laws of nature in medieval or modern times brought about by aliens, a time-space warp, etc.). One example of a universe that is in part historically recognizable but also obeys different physical laws is Poul Anderson’s Three Hearts and Three Lions in which the Matter of France is history, and the fairy folk are real and powerful. A partly familiar European history for which the author provides a point of divergence is Randall Garrett’s “Lord Darcy” series: a monk systemizing magic rather than science, so the use of foxglove to treat heart disease is called superstition.

Jonathan Strange & Mr Norrell takes place in an alternate version of England where a separate Kingdom ruled by the Raven King and founded on magic existed for in Northumbria for over 300 years. In Patricia Wrede’s Regency fantasies, Great Britain has a Royal Society of Wizards, and in Poul Anderson’s A Midsummer Tempest William Shakespeare is remembered as the Great Historian, with the novel itself taking place in the era of Oliver Cromwell and Charles I—and an earlier Industrial Revolution. The Tales of Alvin Maker series by Orson Scott Card (a parallel to the life of Joseph Smith, Jr., founder of The Church of Jesus Christ of Latter-day Saints) takes place in an alternate America, beginning in the early 19th century. Prior to that time, a POD occurred: England, under the control of Oliver Cromwell, had banished “makers”, or anyone else demonstrating “knacks” (an ability to perform seemingly supernatural feats) to the North American continent. Thus the early American colonists embraced as perfectly ordinary these gifts, and counted on them as a part of their daily lives. The political divisions of the continent is considerably altered, with two large English colonies bookending a smaller “American” nation, one aligned with England, and the other governed by exiled Cavaliers. Actual historical figures are seen in a much different light: Ben Franklin is revered as the continent’s finest “maker”, George Washington was executed at the hands of an English army, and “Tom” Jefferson is the first president of “Apallachee”, the result of a compromise between the Continentals and the British.

On the other hand, when the “Old Ones” still manifest themselves in England in Keith Roberts’s Pavane, which takes place in a technologically backward world after a Spanish assassination of Elizabeth I allowed the Spanish Armada to conquer England, the possibility that the fairies were real but retreated from modern advances makes the POD possible: the fairies really were present all along, in a secret history. Again, in the English Renaissance fantasy Armor of Light by Melissa Scott and Lisa A. Barnett, the magic used in the book, by Dr. John Dee and others, actually was practiced in the Renaissance; positing a secret history of effective magic makes this an alternate history with a POD, Sir Philip Sidney’s surviving the Battle of Zutphen, and shortly there after saving the life of Christopher Marlowe.

Many works of fantasy posit a world in which known practitioners of magic were able to make it function, and where the consequences of such reality would not, in fact, disturb history to such an extent as to make it plainly alternate history. Many ambiguous alternate/secret histories are set in Renaissance or pre-Renaissance times, and may explicitly include a “retreat” from the world, which would explain the current absence of such phenomena.

When the magical version of our world’s history is set in contemporary times, the distinction becomes clear between alternate history on the one hand and contemporary fantasy, using in effect a form of secret history (as when Josepha Sherman’s Son of Darkness has an elf living in New York City, in disguise) on the other. In works such as Robert A. Heinlein’s Magic, Incorporated where a construction company can use magic to rig up stands at a sporting event and Poul Anderson’s Operation Chaos and its sequel Operation Luna, where djinns are serious weapons of war — with atomic bombs — the use of magic throughout the United States and other modern countries makes it clear that this is not secret history—although references in Operation Chaos to degaussing the effects of cold iron make it possible that it is the result of a POD. The sequel clarifies this as the result of a collaboration of Einstein and Planck in 1901, resulting in the theory of “rheatics”. Henry Moseley applies this theory to “degauss the effects of cold iron and release the goetic forces.” This results in the suppression of ferromagnetism and the reemergence of magic and magical creatures.

Alternate history shades off into other fantasy subgenres when the use of actual, though altered, history and geography decreases, although a culture may still be clearly the original source; Barry Hughart’s Bridge of Birds and its sequels take place in a fantasy world, albeit one clearly based on China, and with allusions to actual Chinese history, such as the Empress Wu. Richard Garfinkle’s Celestial Matters incorporates ancient Chinese physics and Greek Aristotelian physics, using them as if factual. A fantasy version of the paratime police was developed by children’s writer Diana Wynne Jones in her Chrestomanci quartet (1977–1988), with wizards taking the place of high tech secret agents. Among the novels in this series, Witch Week stands out for its vivid depiction of a history alternate to that of Chrestomanci’s own world rather than our own (and yet with a specific POD that turned it away from the “normal” history of most worlds visited by the wizard).

Terry Pratchett’s works includes several references to alternate histories of Discworld. Men At Arms observes that in millions of universes, Edward d’Eath became an obsessive recluse rather than the instigator of the plot that he is in the novel. In Jingo, Vimes accidentally picks up a pocket organizer that should have gone down another leg of the Trousers of Time, and so can hear the organizer reporting on the deaths that would have occurred had his decision gone otherwise. Indeed, Discworld contains an equivalent of the Time Patrol in its History Monks. Night Watch revolves around a repair of history after a time traveler’s murder of an important figure in Vimes’s past. Thief of Time presents them functioning as a full-scale Time Patrol, ensuring that history occurs at all.