One common theme is alternate universes. Writers like to explore what would have happened if certain events in the original series had been different. For example, if Voldemort had won the first war.
A really popular one is 'Lily's Boy'. It offers a different perspective on Harry's journey, exploring how things could have been different if certain events had other outcomes. It's well - written with great character development.
Well, it could be about a more aggressive or unforgiving version of Harry Potter in fan - created stories. Maybe it shows Harry in situations where he has to be really tough and make hard decisions, different from the more benevolent Harry in the original books.
Stories about the different magical creatures in the HP world are also very interesting. Take the Hippogriff as an example. Buckbeak's story is full of magic and wonder. Hagrid's teaching about how to approach this proud creature shows the unique charm of the magical world.
Harry, as we all know, has his group of friends like Ron and Hermione in the original story. But in this fanfiction, Gabby becomes a central figure in his life. Gabby could be a character who is new to the wizarding world of Hogwarts or she could be someone with a mysterious past that Harry is drawn to uncover. Their relationship and the development of their characters are what drive the story forward.
One popular HP HGSS Harry Potter fanfiction is 'All Our Yesterdays'. It offers a unique take on the relationship between Harry and Severus Snape in the context of the Hogwarts School of Witchcraft and Wizardry. Another great one could be 'A Different Sort of Magic' which delves deep into the magical lore of the series and presents new adventures for the characters.
I'm not sure of specific popular 'brutal harry hp fan fiction' stories off the top of my head. But often, stories that deviate from the normal, more positive portrayal of Harry tend to attract a certain audience. If a story manages to blend the familiar elements of the Harry Potter world with a new, brutal take on Harry's character, it has the potential to gain popularity. You could also check out some HP fan - fiction communities on social media platforms. There, fans might recommend some of their favorite 'brutal harry' stories.
Another theme is the power struggle. Both Harry and Riddle are powerful in different ways, so fan fictions might focus on how they compete or cooperate in terms of magic and influence. For example, they could be forced to work together against a new threat and how that changes their relationship.