One interesting concept could be the idea of Rome never falling. In such a novel, we might see how Roman culture and governance continued to expand and influence the world on a much larger scale. Maybe Rome would have reached the Americas before other European powers, leading to a very different kind of colonial history.
One interesting concept could be a world where the South won the American Civil War. This would lead to a completely different social, political and economic landscape in the United States. Another could be if the Roman Empire never fell and continued to expand and influence the modern world in ways we can't even imagine. Also, the idea of a world where dinosaurs never went extinct and co - exist with humans is really fascinating in alternate history fanfic.
One interesting concept could be a world where the Axis powers won the war. This would lead to a completely different geopolitical landscape, with different countries under different forms of rule. Another could be if certain key battles had different outcomes, like if D - Day had failed. It would have a huge impact on the course of the war and the future of Europe.
One interesting concept could be a different political landscape. For example, if the Reds had achieved certain goals earlier or in a different way. It might also explore how different leaders could have emerged and changed the course of events. Maybe there could be a scenario where the Reds had more influence on international relations at an earlier stage, leading to different alliances and geopolitical situations.
There are often characters based on real historical figures with altered fates. For instance, Augustus, but in a scenario where he faced more significant challenges to his rule. This could lead to him being a more complex and perhaps more ruthless leader as he fought to maintain his power in a different historical context.
In some alternate naruto fanfiction, there might be a scenario where Naruto was raised in a different village. Imagine if he was brought up in the Sand Village. His personality and skills would likely develop differently, influenced by the Sand's culture and fighting styles. He might form different relationships and have different goals compared to his original story.
One interesting concept is the re - imagining of well - known characters in different settings. For example, taking a classic fairy - tale character and placing them in a modern, post - apocalyptic alternate world. Another concept could be the creation of entirely new species or races that are unique to the alternate world. Also, exploring different social structures and power dynamics in these worlds can be really engaging.
There might be a '9 11 alternate history novel' in which the hijackers were discovered during their flight training. The instructors noticed their suspicious behavior and reported them, which led to their arrest and the prevention of the attacks. In such a novel, it could explore how the world would have been different without that tragic event. There would have been no large - scale military interventions in the Middle East directly related to 9/11, and the geopolitical situation would have evolved in a different way.
In alternative history of the novel, the change of a key location can be really fascinating. Let's say a novel is set in a big, prosperous city. But in the alternative history, that city was destroyed long ago. The characters who were relying on the city's resources, like its libraries, markets, or magic academies, would have to find other places. This would scatter them, and they might form new alliances or rivalries in different regions. It could also mean that the knowledge or power concentrated in the city is now lost or spread in unexpected ways, causing a ripple effect on the entire story.
In RWBY alternate universe fanfiction, a cool idea is that the characters switch roles. Yang could be the shy, bookish type while Weiss is the brash, party - loving one. Also, the Dust element could be completely different. Instead of being a resource mined from the earth, it could be something that is created through magic. Additionally, an interesting concept is an AU where the characters are in a modern, non - combat setting, like a high school drama where they still have their unique personalities but deal with normal teenage problems.
One interesting concept could be a Naruto AU where the ninja world is a modern, high - tech society. Instead of using traditional ninja tools, they use advanced weapons and gadgets. Another could be an AU where the main characters have different elemental affinities than in the original story, which would change their combat styles and relationships.