Another option could be Tumblr. There are many Tumblr blogs dedicated to Marvel and Avengers in particular. While it's not as organized as the dedicated fanfiction platforms, with some searching, you can come across some interesting Avengers Endgame fan - written stories.
You can try websites like Archive of Our Own (AO3). It has a large collection of fanfiction on various topics, including Avengers watching Avengers Endgame. There are also some fanfiction sections on dedicated superhero forums where fans share their creative works.
There are also some Reddit communities dedicated to Avengers fanfiction. Subreddits like r/AvengersFanfiction might have posts specifically about the Endgame final battle fanfiction. You can also try using Google search with specific keywords like 'avengers endgame final battle fanfiction' and it might lead you to some individual blogs or smaller fanfiction websites that host such stories.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfics, and it's likely you'll find many 'Avengers watch Endgame' ones there. Just use the search bar and type in relevant keywords.
Some Reddit communities dedicated to 'Avengers' fanfictions might be helpful. Members often share their favorite fanfictions, and sometimes they even create their own. You can ask for recommendations for 'Avengers Watch Endgame' fanfictions in these communities and get some great suggestions from fellow fans.
There are several platforms where you might be able to find Endgame fanfiction. Archive of Our Own (AO3) is a popular site that has a vast collection of fan - created works, including Endgame fanfiction. FanFiction.net is also well - known and likely to have a good number of stories related to Endgame. Additionally, some Tumblr blogs might also share or recommend Endgame fanfiction.
One highly regarded story is 'The New Beginning' which explores what happens after the events of Endgame in a really unique way. It delves deep into the characters' emotions and how they cope with the new world they're in. Another great one is 'Beyond the Snap' which focuses on the alternate timelines that could have been created during the events of the movie. It's really interesting to see how the author plays with the concepts from the movie.
A really cool plot idea could be that the Avengers are watching Endgame in a sort of 'alternate reality cinema' where the events in the movie start to bleed into their real world. So they have to stop the movie from fully playing out to prevent chaos in their own universe. This would involve a lot of action and strategic thinking as they try to stop things like Thanos from emerging from the screen while also trying to understand the significance of what they're seeing in the movie.
There's a chance that side characters get more focus too. Maybe characters like Rhodey or Nebula could have more in - depth character development as they react to the events of Endgame while being watched by the Avengers in the fanfiction.
Well, one interesting thing could be the characters' reactions. They might have different emotional responses seeing the events of Endgame unfold in the fanfiction compared to the movie. For example, Iron Man could show more internal struggle as he witnesses his sacrifice again.
You can start by searching on popular fanfiction platforms. Use specific keywords related to Avengers Endgame, like the names of your favorite characters. Check out the top - rated or most - reviewed stories. They usually tend to be of higher quality.