A common theme is the clash of technologies. Earth's relatively primitive (compared to Star Wars) weaponry and tech face off against the advanced blasters, lightsabers and spaceships of the Star Wars universe.
One great 'Earth War vs Star Wars' fanfiction is 'The Clash of Realms' where Earth's military forces find themselves in an accidental encounter with a Star Wars fleet. It has an exciting plot with intense battles and interesting character interactions.
Well, there might be a story where a Sith Lord tries to take over Earth. He uses his dark side powers to corrupt Earth's leaders and create mayhem. But a group of brave Earth heroes, along with some Rebel Alliance members who somehow end up on Earth, join forces to stop him. This would involve epic battles on Earth's streets and in space. There could also be a fanfiction where a young Earthling discovers he has latent Force abilities and is taken to the Star Wars universe to be trained as a Jedi or Sith, depending on who finds him first.
Well, Han Solo is quite popular in these fanfictions. His roguish charm and piloting skills can create exciting scenarios when he comes to Earth or when Earthlings meet him in the Star Wars galaxy. Yoda is another favorite. His wisdom and unique way of speaking can be really fun to incorporate into stories involving Earth. And from Earth, characters like Batman could be used. His detective skills and gadgets would be interesting to contrast with the technology and powers in the Star Wars universe.
You can start by looking on fanfiction websites such as Archive of Our Own (AO3). It has a large collection of fan - created works, and you can use the search function to specifically look for 'Earth vs Star Wars' fanfiction. Another option is FanFiction.net. There are also some Star Wars - specific forums where fans might share their own 'Earth vs Star Wars' stories or recommend ones they've read.
There are fanfictions that put a humorous spin on 'Earth vs Star Wars'. For instance, they might have a situation where Earth's pop culture, like our movies and music, somehow influences the Star Wars characters. Or perhaps a story where a group of Star Wars bounty hunters come to Earth and are completely baffled by our everyday things like traffic and fast - food restaurants. These types of fanfictions add a fun and unique perspective to the 'Earth vs Star Wars' concept.
Well, if Star Wars goes to war with Earth in fanfiction, the political aspects would be very interesting. The Galactic Empire or the New Republic would have their own agendas. Earth's various governments would need to unite quickly, which could be a problem in itself. There would be a race to see who could adapt to the other's technology and warfare style faster. And what about the Ewoks? Could Earth learn from their simple but effective tactics against the Empire?
Another fanfiction concept could involve Jedi and Sith being reincarnated on Earth. They'd have to adapt to modern society while still holding onto their powers and the eternal struggle between the light and dark side. For example, a young Jedi might discover their powers in a world full of distractions and temptations, and they'd have to learn how to use them for good.
In this fictional war, Darth Vader would be a terrifying opponent for Earth. His combat skills and the power of the Dark Side are formidable. For Earth, perhaps a group of elite special forces soldiers could be key players. They would be the ones sent on dangerous missions behind enemy lines. And we can't forget about the droids in Star Wars. Their advanced programming and capabilities could be a major factor, while on Earth, hackers might be the ones to try and disrupt their systems.
Star Wars fanfiction often has a strong sense of a pre - established lore that fans build upon. For example, there are countless stories about Luke Skywalker's further adventures after the original trilogy. Stargate fanfiction also respects its lore but has more room for creating new alien species and planets. When comparing the two in fanfiction, the writing styles can be different. Star Wars fanfic may be more influenced by the space opera genre, with grand battles and dramatic revelations. Stargate fanfic might be more about the mystery of the unknown and how the characters interact with new and strange civilizations.