One interesting concept is the idea of different physical laws. For example, in some alternate universe fictions, gravity might work in reverse. Another is the concept of alternate versions of ourselves. We could be heroes or villains in another universe. Also, the technology can be radically different, like telepathy being a common form of communication instead of using phones.
In alternate universe science fiction, the concept of parallel evolution is fascinating. Species might have evolved in completely different ways. For instance, instead of mammals becoming the dominant species on Earth - like planet in an alternate universe, it could be reptiles or insects. The concept of different forms of energy is also cool. There could be a universe where magic is just another form of energy, and beings have learned to manipulate it just like we do with electricity.
Well, time can be really different in alternate universe science fiction. It might move at different speeds or even be non - linear. And the social structures can vary greatly. There could be matriarchal societies instead of patriarchal ones. Creatures that are extinct in our world might thrive in an alternate universe. It's all about exploring the 'what ifs' of different universes.
Well, I think the concept of the multiple layers of reality in Westworld is really cool. There's the surface level of the Western - themed park that the guests see, but then there are all these hidden levels, like the backstage areas where the hosts are maintained and reprogrammed. And the way the show plays with the idea of memory, how the hosts' memories can be manipulated and yet they can still hold on to fragments that lead to their awakening, is quite remarkable.
One of the most fascinating concepts is the idea of alien cultures. In Orville science fiction, we get to see various alien species with their own unique languages, customs, and values. For example, some aliens may have a completely different social structure compared to humans, which makes for an exciting exploration of diversity in the universe. It also makes us think about how we would interact with such different beings if we were to encounter them in real life.
One interesting concept is psychic powers being used for interstellar communication. In some psionic sci - fi, beings can send thoughts across light - years, bypassing the need for traditional radio signals.
The most interesting concepts include the creation of unique digital assets. For example, in Ethereum science fiction, artists could create one - of - a - kind digital artworks that are authenticated and traded on the blockchain. There's also the idea of a global reputation system. Everyone's actions and transactions on the Ethereum network could contribute to their reputation score, which would affect their ability to engage in various activities. And the concept of autonomous organizations, where an organization can run itself based on the rules encoded in smart contracts.
One interesting concept could be the unique ecosystems that might exist on Titan in science fiction. Since Titan has a thick atmosphere and methane lakes, stories could explore life forms that are adapted to these extreme conditions.
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.
Some fanfictions in the Avengers alternate universe explore the idea of the Avengers being part of a post - apocalyptic world. In this setting, they might have to fight against new and more dangerous threats that emerged from the ruins. Maybe there are mutated creatures or a new breed of supervillains. Also, an alternate universe could feature a younger version of the Avengers, like teen versions, and their journey of growing into heroes while dealing with the typical teenage problems along with the super - hero stuff.
One interesting concept is the re - imagining of characters. For example, in an alternate universe, a classic hero could be a villain. Another concept is the different power structures. Maybe magic is used in a completely new way, like being a currency instead of a weapon. Also, the alternate social hierarchies can be fascinating. A race that was once oppressed could be the ruling class.
One interesting concept is the idea of meeting alternate versions of oneself. It can lead to self - discovery and exploring different personalities. Another is the discovery of unique cultures and societies in the alternate universes. For example, a world where magic is the norm instead of science. And then there's the concept of changing the course of events in an alternate universe, which can have far - reaching consequences.