The exploration of magic and the unknown is also popular. In the 'Game of Thrones' world, magic is a somewhat mysterious element. Fanfiction can take this further, like creating new spells or exploring the origins of the White Walkers in more detail.
Family loyalty and betrayal is another big one. We see this in the original series a lot, and fanfiction writers expand on it. They might write about a scenario where a character has to choose between their family's wishes and their own moral code.
Power struggles are a very common theme. Fans often explore how different characters vie for the Iron Throne or power in their respective regions. For instance, they might write about a minor character's attempt to rise through the ranks in King's Landing.
Some popular themes might include alternative character relationships. For example, exploring what could have been between characters that didn't have a romantic storyline in the original series. Another theme could be different power dynamics in the Seven Kingdoms, where a minor character rises to great power in the fanfic. Also, the exploration of different cultures within the 'Game of Thrones' world in more depth than the show or books allowed.
The theme of magic in the Witcher world is also popular. Fanfictions might explore how different mages use their magic, the limitations and consequences of magic use, and how it affects the balance of power in the Witcher universe. Some fanfictions may also create new spells or magical artifacts, adding an extra layer of creativity to the existing Witcher lore.
One popular theme is alternate endings. Fans often rewrite the ending they didn't like in the official series. Another is character backstories. For example, delving deeper into the past of characters like the Hound or Varys. And relationships also play a big part, exploring different romantic pairings that were not fully developed in the show or books, like Jaime and Brienne having more adventures together before the end of the story.
Another popular theme is the exploration of magic. In the show, magic was a bit inconsistent in its use. Fanfiction writers often delve deeper into the magic system, creating stories where characters develop new magical abilities or where magic plays a more prominent role in the overall plot. For example, a story could be about a character becoming a powerful sorcerer and using magic to unite the Seven Kingdoms in a different way than in the original story.
Some fanfictions might focus on the sexual tension and relationships within the Night's Watch. Since they are sworn to celibacy, the idea of breaking those vows in a fictional, romantic - sexual context can be an appealing theme for some writers.
One popular theme is the idea of star - crossed soulmates. For example, a character from a noble house and a commoner might be soulmates, but the class differences create huge obstacles. Another theme is the soulmate bond being tested by the power struggles in Westeros. Like how the battle for the Iron Throne can put a strain on a relationship between soulmates.
One popular theme is her relationship with her family. Writers might explore her bond with her father, Jaime, or her mother, Cersei. Another theme could be her life in Dorne, the new place she was sent to, and how she adapted there. Also, her potential role in the power struggles within the Seven Kingdoms without any sexual undertones.
One popular theme is friendship. Fans often write about the strong bonds between Percy, Annabeth, Grover, and the other characters. For example, a fanfic might focus on how they support each other during a particularly difficult quest.
One popular theme is the crossover of characters. For example, imagining how a character from Game of Thrones would fare in the World of Warcraft universe or vice versa. Another theme is exploring uncharted storylines. In Game of Thrones fanfiction, it could be about what might have happened if a certain character didn't die. In World of Warcraft fanfiction, it might be about new adventures in unexplored regions. And power struggles are also common. Just like in the original works, fanfiction often delves into who will gain power and how they will use it in these fictional universes.
Often, a common theme is revenge. If her family was wronged in the original Game of Thrones story, the daughter in fanfiction might seek revenge. She could use her wits and skills, which might be newly developed in the fanfiction, to take on those who caused harm to her family. It gives the character a strong motive and makes for an exciting plot as she plots and executes her revenge plans against powerful foes.