A great idea for Dark Cloud fanfiction is to time - travel within the game's universe. What if a character goes back in time and changes something small, but it has a huge impact on the overall story? Also, you could write a fanfic from the perspective of the villains. Explore their motives and what led them to do the things they did. This would give a fresh and different view of the Dark Cloud world.
Well, you could focus on the relationships between the characters in Dark Cloud. Like writing a fanfic about how Goro and Ungaga became friends. Or you could take the setting of the game and expand on it. Suppose there are other hidden areas in the Dark Cloud world that the main characters haven't discovered yet. Write about their adventures in those areas.
Another aspect of Dark Cloud 2 fanfiction could be alternative universes. Writers might create a story where the events of the game took a different turn. For instance, if the Dark Genomes were not defeated as easily, how would the characters adapt and fight back?
One interesting story could be about Xiao's adventures in a new, mysterious realm in the dark cloud fanfiction. Maybe he discovers a hidden power there.
Some fanfictions could focus on the origin of the dark cloud alpha itself. It could explore how it was created, perhaps as a result of a powerful wizard's failed experiment or an ancient curse. The story might then follow the attempts of the characters to reverse or at least understand this creation to save their world from its effects.
You could write a 'the dark crystal fanfiction' about a Skeksis who has a change of heart. Perhaps this Skeksis realizes the error of their ways after seeing the destruction they've caused. They then try to secretly help the Gelflings, all while hiding their new - found compassion from the other Skeksis. This would add an interesting layer of drama and conflict to the story.
One idea could be exploring a different ending for the story. Maybe the main characters find a new way to defeat the evil forces that was not shown in the original. Another could be a time - travel based fanfiction where a character goes back in time to change certain events that led to the current situation in Dark Shadows 2.
One idea could be exploring the backstories of the characters in more depth. For example, you could write about how a particular character came to possess their unique powers in the Dark Legacy 2 universe. Another idea is to create an alternate ending to the game's story. Maybe in your fanfiction, the main villain has a change of heart and teams up with the heroes. Or you could focus on a side character and give them a more prominent role, like a minor mage who ends up saving the day through their unexpected magic abilities.
Perhaps the dark protector is a person who was wronged in the past and now uses his skills to protect those who are also being oppressed. He could operate in the shadows of a big city, saving the poor and the weak from the clutches of powerful criminals. This would add a touch of vigilante justice to the fanfiction.
One idea could be to explore the darker side of the PPGZ characters' powers. For example, Blossom's leadership could turn into a controlling dictatorship within the group. Another could be a scenario where the villains manage to corrupt the girls, making them fight against the very people they once protected. Maybe a new, extremely powerful villain emerges who uses mind - control on the PPGZ, leading them to do his bidding in a very dark and twisted way.
Some dark zootopia fanfiction might also focus on the psychological toll of living in a society that seems so perfect on the surface but has hidden problems. Characters could struggle with depression or anxiety, like Judy Hopps realizing that her dream job isn't all she thought it would be and having to deal with the corruption and darkness she discovers within the Zootopia Police Department.
One idea could be exploring the origin of the Dark Contracts. Maybe a character discovers an ancient tome that details how the first Dark Contract was made. Another could be a story about a character who is forced to make a Dark Contract but then tries to find a way to break it without dire consequences.