According to Steven H Silver, alternate history requires three things: 1 ) the story must have a point of divergence from the history of our world prior to the time at which the author is writing, 2 ) a change that would alter history as it is known, and 3 ) an examination of the ramifications of that change.

* Moriarty by Modem, a short story by Jack Nimersheim, describes an alternate history where Babbage's Analytical Engine was indeed completed and had been deemed highly classified by the British government.

* In the manga / anime Gintama, the main character, Gintoki Sakata, wields a bokken as opposed to a katana, as the story takes place in an Edo period of an alternate timeline where a weapons ban has been imposed by imperialistic aliens.

Although his name and history were taken from his early life with his adoptive Earth parents, everything about Clark was staged for the benefit of his alternate identity: as a reporter for the Daily Planet, he receives late-breaking news before the general public, has a plausible reason to be present at crime scenes, and need not strictly account for his whereabouts as long as he makes his story deadlines.

" It has also been implied, especially in the ' alternate future ' story Kingdom Come, that the Clark Kent persona is symbolic of the values taught to him by his wholesome Midwestern parents, the values he holds most dear: his instinctive knowledge of right and wrong that allows him to adopt his Superman persona, without being consumed by the moral implications of his actions ; Superman is the means through which he can bring this example to the world.

With the advent of the World Wide Web and other multimedia technologies, bands such as The Smashing Pumpkins ( with the album Machina / The Machines of God ), Coheed And Cambria ( with the Amory Wars as a backing story for every one of their albums ), and Nine Inch Nails ( with the album Year Zero ) exploited emergent cultural phenomena such as the alternate reality game to provide additional web-based content beyond that on the album itself.

After several years of directing primarily lower-key live-action films, Hideaki Anno formed his own production studio and revisited his still-popular Evangelion franchise with the Rebuild of Evangelion tetralogy, a new series of films providing an alternate retelling of the original story.

The story was slightly altered and the title changed to King Kong vs. Prometheus, returning the name to the original Frankenstein concept ( The Modern Prometheus was the alternate name of Frankenstein in the original novel ).

The New York Times reviewed the play saying " Mr. Davalos has molded a daft campus comedy out of this unlikely convergence ," and nytheatres review said the playwright " has imagined a fascinating alternate reality, and quite possibly, given the fictional Hamlet a back story that will inform the role for the future.

Proteus of Egypt is mentioned in an alternate version of the story of Helen of Troy in the tragedy Helen of Euripides ( produced in 412 BC ).

In the Voyager episode, " Non Sequitur ," Tom Paris ' alternate self ( in the parallel dimension ) relates to Harry Kim a story about how, during a stop at Deep Space Nine, he got in a bar fight with a Ferengi and was thrown in the brig by " a very unpleasant shapeshifter ", obviously referring to Odo.

In the alternate reality of X-Men: Ronin, the story is played out in Japan.

If events should deviate significantly, the story may then fall under the genre of alternate history, which is known for speculating on what could have happened if a significant historical event had occurred differently.

Other references to these alternate Oerths appear in the Gord the Rogue short story anthology Night Arrant as well as in Gygax's Epic of Aerth campaign setting for the Dangerous Journeys roleplaying game.

The story from the original 1979 series has been considerably extended with sequels, prequels, side stories and alternate timelines.

* In the Justice League episode " A Better World, Part 1 ", an alternate Martian Manhunter lures the Justice League into a trap by deploying a similar story.

The novel was the last of a story arc published to coincide with the series ' 30th anniversary in 1993, in which the Seventh Doctor encounters various alternate realities that have been created due to the Monk's meddling with time, including a reality where the Third Doctor was killed in his confrontation with the Silurians ( Blood Heat ), attempting to distract the Doctor while he helps the Vardans to invade Earth, thus getting their mutual revenge on the Doctor for their losses during their past confrontations with him.

* Cardinal Zero from the single episode audio story Circular Time: Spring – a similarly titled Time Lord ( Zeuro ) appears in the Doctor Who Unbound audio A Storm of Angels ( although it is not established whether these are meant to be alternate versions of the same person )

Clearing the game unlocks an alternate story mode with some differences.

An alternate story of Athena and Iodame is found in the Etymologicum Magnum.

However, the end of the story reveals that it actually takes place in an alternate future, caused by Scrooge travelling 100 years into the future to retrieve his # 1 dime.

The terms multiverse, parallel universe, alternate history, story or screen bible, backstory and crossover have a considerable amount of overlap with fictional universes.

* In Neil Gaiman's Hugo Award winning short story " A Study in Emerald ", the Moriarty and Holmes of an alternate history reverse roles.

* ETCSL-Text and translation of the Sumerian flood story ( alternate site )

These scenes told a non-canon alternate storyline involving Arrakis, the spice melange and the Great Houses while introducing a new Great House, House Ordos, to the Dune universe.

Although an X-Men character for years, Nightcrawler did not get his own comic book title ( written and drawn by Cockrum ) until November 1985, when Nightcrawler, along with Lockheed, accidentally traveled to several alternate dimensions, meeting strange beings such as the Bamfs ( the Bamfs originally appeared in a story fellow X-Man Kitty Pryde told Illyana as a bedtime story in X-Men # 153 ).

An alternate story is told by Helen W. Atwater in her work titled Bread and the Principles of Bread Making.

This told an alternate version of the events from A Link to the Past.

Unable to rationalize the accident against the Law of Conservation of Mass and proven transporter theory, one of the scientists, a Dr. Nol, told the Cardassian High Council that he must be from an alternate dimension.

He attempted to enlist in the Army early in World War II, and almost succeeded, by covering his glass eye each time he was told to alternate during the eye exam.

However, his magnum opus is widely regarded to be the mid-1980s 12-issue miniseries Squadron Supreme, which told the story of an alternate universe where a group of well-intended superheroes decide that they would be best suited to run the planet.

In the alternate ending, Cindy is told Cody does not exist.

The DVD version contains an alternate ending wherein Ginger is told in the bank that the account is already almost empty, alluding to the possibility that Stanley has played one final trick on them and taken the money himself.

It was created as a serial comic for Nintendo Power magazine by the acclaimed manga author Shotaro Ishinomori, and later collected in graphic novel form, this told an alternate version of the events from A Link to the Past.

Although these alternate titles have little or no relation to the plot, the latter two appear in the lyrics of the title song sung by Chaney: " This cannibal orgy is strange to behold in the maddest story ever told.

The future Creeper ingested all the alternate Creepers, but realizing the truth of the event, he returned them to the original Creeper and told him and Jack Ryder to remerge, and The Creeper was reborn.

There is also an alternate form of the story, in which Telemachus stood up in the amphitheatre and told the assembly to stop worshiping idols and offering sacrifices to the gods.

Having an alternate name was trendy at one point, and one of her friends told her that she looked like a Momoka.

He told the demon that was after the sisters about their desires, which the demon used to create alternate realities to destroy them.

* Lav, an alternate name for Lava, a son of the Hindu deity Rama and his wife Sita, whose story is told in the Ramayana

The NFL told Glenn that he would also appear in the 2006 Pro Bowl, however they later informed him that he did not receive enough votes and that he would be an alternate.

Like most alternate reality games, the story of Perplex City is told through blogs, puzzles, and other various media.