Perhaps he meets a version of his parents who are still alive. This would be an incredibly emotional encounter for Harry. He would get to know them, and they could teach him things about magic and life that he never had the chance to learn before.
He might meet different versions of his friends. For example, a Hermione who is a powerful sorceress ruling a magical kingdom. It would be exciting as he could learn new magic from her and be part of her adventures in this alternate reality.
One great 'alternate universe Harry Potter fanfiction' is 'The Life and Times of Severus Snape'. It delves deep into Snape's character in an alternate setting. It shows a different side of Hogwarts and the wizarding world through his eyes. Another one is 'A Different Sort of Magic' which changes the magic system in an interesting way. The characters have to adapt to new rules of magic, creating a fresh and engaging story.
In a female Harry alternate universe fanfiction, the character development can be very different. For one, she might face different social expectations compared to male Harry. Society in the wizarding world could treat her in a more protective or dismissive way at first. Her relationships might also develop uniquely. For example, her friendship with Ron and Hermione could have different dynamics. She may have to prove herself more in a male - dominated magical society, which could lead to a more assertive and determined character growth.
Well, 'The Veil's Echo' is a top - notch alternate universe fanfiction. In this story, the Veil in the Department of Mysteries has some unforeseen consequences that send Harry and his friends into a parallel wizarding world. It's full of mystery and adventure. 'A World Without Voldemort' is another great one. As the title suggests, Voldemort was never born, and the wizarding world has developed in a completely different direction. There are new political struggles and different character dynamics. Also, 'The Animagus Potter' is cool. Harry discovers he has an animagus form much earlier and it changes how he interacts with others at Hogwarts.
There are quite a few good 'Harry Potter Alternate Universe Travel Fanfiction' out there. For example, 'The Lost in Alternate Potter Worlds' story is about a group of students who get lost in different alternate versions of the wizarding world. They have to find their way back while facing all sorts of strange challenges and new magical creatures. Another one is 'When Harry Traveled to the Alternate Hogwarts'. In this one, Harry, on his own, travels to an alternate Hogwarts where things are very different. The relationships between the characters are changed, and there are new secrets to uncover. 'The Other - Side Potter Universe' is also a fascinating fanfiction. It shows an alternate universe where the war between good and evil took a completely different turn, and the characters have to deal with the consequences of that different history.
One unique feature is the ability to re - imagine their relationship. For example, in some fics, they might meet as children before Hogwarts. Another is the change in their character traits. Maybe Ginny is more shy or Harry is more outgoing. Also, the settings can be different. They could be in a world where magic is almost extinct or where there are new magical creatures.
I really like 'Time - Twisted Love' in the 'Harry and Ginny alternate universe fanfiction' genre. It plays with time travel and shows Harry and Ginny meeting at different points in time in a really convoluted but fascinating way. 'The Magic Within' is another one where Ginny discovers a new type of magic that only she can use, and it changes the dynamic between her and Harry. Also, 'Hidden Worlds' is a great read. It's about Harry and Ginny finding a secret world within Hogwarts that no one else knows about and how that impacts their relationship.
One great 'Harry Draco alternate universe fanfiction' is 'All Our Secrets Laid Bare'. It explores a world where they are on opposite sides of a political struggle in Hogwarts. Another is 'Away Childish Things' which gives a really different take on their relationship, with them being forced to work together in a Muggle - wizard cooperation project.
In female Harry alternate universe fanfictions, a popular trope is the 'gender - role subversion'. Female Harry may break the traditional gender roles in the wizarding world. For example, she could be better at magic that is typically considered male - dominated like dueling. Another common trope is the 'female friendship' trope. She might form closer bonds with female characters than male Harry did, and these friendships could play a crucial role in the story. Also, the 'hidden potential' trope is often seen, where her femaleness is initially seen as a weakness but later turns out to be a great strength.