In After Earth fanfiction, the concept of new threats emerging is quite interesting. It could be a new type of alien - like creature that has evolved from the changed environment. This would add a whole new level of danger to the already precarious situation. Also, the idea of the characters having to adapt to new climates or terrains not shown in the movie. For example, if they have to cross a huge desert full of quicksand and strange magnetic anomalies. And some fanfiction might play with the concept of time travel within the After Earth universe, which would be really exciting.
Well, in After Earth fanfiction, a cool concept is the idea of different tribes or groups that have formed. Some might be more primitive, while others could be highly advanced in certain skills. For instance, there could be a tribe that has mastered the art of using the mutated animals for transportation. And then there are the character - centered concepts. A lot of fanfiction might explore the backstories of characters we didn't know much about in the original. It gives them more depth and makes the overall story more engaging.
Another concept might be the crossover of powers. In some fanfictions, Earthlings could gain the powers of the RWBY characters, like semblances. This would lead to all kinds of new storylines, such as how they would use these powers for good or evil. It could also explore how the RWBY characters would train Earthlings to control these newfound abilities.
Well, one interesting concept could be the re - imagining of the relationship between heaven and earth. Maybe it explores how the twilight in this fanfiction affects the balance or interaction between the two realms.
In RWBY Earth Crossover fanfiction, a cool concept is the way the Grimm would be perceived on Earth. Maybe the military would try to study them, thinking they are some new kind of bio - weapon. Also, the Huntsmen and Huntresses could become like superheroes on Earth, with people being in awe of their powers and skills.
One interesting concept could be the exploration of different wizarding cultures around the world. In fanfiction, authors might create unique magical traditions in various countries that are part of the 'Harry Potter Earth'. Another concept could be the expansion of the magical creatures' lore. For example, how certain creatures interact with different human cultures on this broader 'Earth' in the HP universe. Also, some fanfictions might delve into the idea of alternative forms of magic that are specific to certain regions of this 'Harry Potter Earth' which weren't explored much in the original series.
Well, in Earth and Star Gate fanfiction, the idea of alternate timelines is quite engaging. For example, what if a different decision was made during a Stargate mission? This can completely change the fate of Earth and the relationships with other alien races. Also, the concept of characters developing new powers or abilities due to exposure to alien elements near the Stargate is really fascinating.
One interesting concept could be exploring alternate versions of characters that we didn't see in the original 'The Flash Crisis on Earth X'. For example, what if there was a version of Barry Allen with different powers or a different moral code? Another concept could be delving deeper into the relationships between characters from different Earths. Maybe a fanfiction could focus on the friendship or rivalry between characters that only briefly interacted in the actual storyline.
Well, in this fanfiction, the relationships within the Percy Jackson universe might be re - imagined. For example, how the Primordial of Earth interacts with the existing gods and demigods. It could be a source of great conflict or a new form of alliance. The Primordial might have its own motives and goals that are different from the known characters, which could lead to a whole new set of adventures for Percy and his friends.
The idea of different species from Dragon Age coexisting with humans on Earth is also fascinating. Qunari, for instance, are much larger and stronger than the average human. Their presence on Earth could change the power dynamics in various ways, from sports to military.
In 'Star Wars meets Earth' fanfiction, a great concept is the cultural exchange. The Jedi Code and its principles could be compared and contrasted with Earth's moral and ethical beliefs. Also, the idea of Sith Lords trying to take over Earth is quite fascinating. It would lead to epic battles between the Sith's dark side powers and Earth's defenders, whether they be military forces or super - heroes.
One interesting concept could be the integration of Earth cultures into the Star Wars universe. For example, how Earth's religions, languages, or traditions might interact with the existing Star Wars cultures like the Jedi or Sith. Another concept could be the use of Earth technology in the Star Wars setting, perhaps Earth weapons being adapted for use against the Empire or the First Order. Also, the idea of Earth characters being Force - sensitive and how they would be trained in the ways of the Jedi or Sith is quite fascinating.