One of the great ones could be 'A Song of Ice and Fire: The Lost Chapters'. It fills in some of the gaps in the original story in a really engaging way. It has well - developed characters and a plot that weaves in and out of the existing lore seamlessly.
Redemption is also a theme that pops up a lot. Some characters in fanfic might be seeking redemption for their past wrongs. This could be a knight who has killed innocents in the past trying to make amends, or a lord who has betrayed his people and now wants to set things right. It's an interesting way to explore the moral grey areas of the 'Game of Thrones' universe.
There's 'Beyond the Wall: A TV Tropes Adventure'. This fanfic is interesting as it focuses on areas of the 'Game of Thrones' world that are not as explored in the show. It uses the TV tropes like 'the chosen one' but in a very 'Game of Thrones' - esque way, with lots of moral ambiguity and complex characters.
A unique plot that either fills in gaps or takes the story in a new direction. Like exploring what would have happened if a certain character didn't die. It has to be something that the original series didn't cover but still feels like it could be part of the same universe. It should also have a good flow and pacing, not be too rushed or too slow.
The 'forbidden love' trope can be really engaging. Imagine a love story between a character from 'Game of Thrones' and one from 'Lord of the Rings' in a crossover fanfiction. This trope can create a lot of conflict and emotional depth. And the 'rag - to - riches' or 'rise to power' trope is also seen a lot, as it shows the character's growth and transformation.
One common trope is the 'fish out of water' scenario. RWBY characters in the unfamiliar and often cutthroat world of Westeros. Another is the power struggle trope. Since both universes have elements of power - seeking characters. A third trope could be the 'unlikely alliance'. For example, a RWBY character teaming up with an underdog in Game of Thrones against a common enemy.
One popular trope is the 'lost heir' trope. In many fanfics, a character is revealed to be the long - lost heir to a great house or even the Iron Throne. This adds an element of mystery and drama. Another is the 'undercover hero' trope, where a character pretends to be someone they're not in order to achieve a greater good. For example, a spy within a rival house.
One popular trope is the 'fish out of water' story. For example, a Viking suddenly finding themselves in the complex political world of Game of Thrones. Another is the power - hungry character from one universe trying to take over in the other. It adds an element of conflict and drama.
One popular trope is the 'fish out of water' story. For example, a character from Game of Thrones suddenly appears in the Warcraft world and has to adapt to its strange new rules, magic, and races. Another is the 'power - up' trope. A relatively weak character from either universe gains extraordinary power in the other universe's context. For instance, a peasant from Game of Thrones might discover they have a natural affinity for Warcraft's shamanistic magic and become a powerful force.
The 'power couple' trope also exists. Two female characters coming together and using their combined wits and influence to navigate the dangerous political landscape of Westeros. For example, characters like Sansa and Margaery might be paired in fanfic in this way.