The combination of different mythologies. Buffy has its own set of vampires, demons, and magic, while Supernatural has a vast array of creatures. When these are combined, it creates a whole new world of possibilities.
One popular 'Supernatural' and 'Buffy' crossover fanfic is 'The Hunter and the Slayer'. It has an interesting plot where Sam and Dean Winchester meet Buffy and her gang. The story is full of action as they team up to fight a common supernatural threat.
Another reason is the potential for character growth. Characters from both shows can learn from each other. Sam Winchester could learn about loyalty from Buffy's friends, while Buffy could learn about the wider scope of the supernatural world from the Winchesters. It also allows for some great fan - service moments, like when all the characters team up for a big battle against a powerful enemy.
I really liked 'When Hunters Meet Slayers'. It's a well - written fanfic that does a good job of melding the two universes. It has some great action scenes where Sam uses his research skills to help Buffy and her gang figure out a new type of demon that has emerged, which is a combination of a demon from 'Supernatural' and one from 'Buffy'.
Yes, there are quite a few. You can find them on popular fanfic websites like Archive of Our Own. Some of them blend the two universes really well, like having Buffy and the Scooby Gang team up with the Winchester brothers to fight a common supernatural threat.
A popular one is 'Crossing Paths'. This fanfiction has an interesting take on the crossover. It starts with a mystery that involves both the Supernatural and Buffy universes. The author does a great job of writing the characters true to their original personalities. Buffy's determination and the Winchesters' tough - guy attitudes are on full display, and the story builds up to a very satisfying climax.
A good blend of the two universes' mythologies. In a Buffy Supernatural crossover, it's important to merge the different supernatural elements in a way that makes sense. This could be how the vampires in Buffy's world compare to the demons in Supernatural, or how the magic works in both. It should feel like a natural combination, not just thrown together randomly. The plot also needs to be engaging. It should have a clear goal or mystery that draws the reader in and keeps them interested throughout the story. Maybe it's a new threat that only the combined forces of Buffy and the Winchesters can face.
The appeal lies in the combination of two beloved supernatural universes. Fans of both shows get to see their favorite characters interact. For example, seeing Castiel meet Giles is really exciting as they both have such different but important roles in their respective shows.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfiction, and there are many Buffy and Supernatural crossover stories there. Just use the search function and type in 'Buffy and Supernatural crossover' and you'll get a bunch of results. Another place is FanFiction.net. It also has a good number of such crossovers, although the quality may vary more compared to AO3.
One great Buffy and Supernatural crossover fanfic is 'Slayer's Road Trip'. It has Buffy and the Scooby Gang teaming up with Sam and Dean. The story combines the mythologies of both shows really well, like dealing with vampires in the Buffy - style and demons as in Supernatural. Another is 'Crossed Paths in the Dark'. It starts with a mystery that seems to be related to both the Hellmouth and the things Sam and Dean usually hunt. It's exciting to see how the characters from both universes interact and learn from each other.