To evolve Eevee into Sylveon, the method depends on the game you are playing: In Pokémon GO:
- Set Eevee as your Buddy Pokémon and earn 70 hearts by feeding, playing, and taking snapshots of it. Once you reach 70 hearts, the evolve button will show Sylveon's silhouette, allowing you to evolve Eevee into Sylveon using 25 Eevee candies
- Alternatively, you can use the nickname trick: rename Eevee to "Kira" and then evolve it using 25 candies. This method only works once per account
In Pokémon Sword and Shield:
- Increase Eevee’s friendship to at least three hearts.
- Make sure Eevee knows a Fairy-type move.
- Level up Eevee once these conditions are met to evolve it into Sylveon
In Pokémon Scarlet and Violet:
- Increase Eevee’s friendship by having it in your party, battling with it, winning battles, feeding it berries, washing it, and taking it to picnics.
- Ensure Eevee knows a Fairy-type move, such as Baby-Doll Eyes (which Eevee learns at level 15).
- When Eevee’s friendship is very high, level it up with the Fairy-type move in its moveset to evolve it into Sylveon.
- You can check Eevee’s friendship progress by visiting the Friendship Checker NPC in Cascarrafa
In Pokémon X and Y:
- Teach Eevee a Fairy-type move.
- Max out its affection, fullness, and enjoyment using Pokémon-Amie.
- Level up Eevee with these maxed affection stats to evolve it into Sylveon
In summary, evolving Eevee into Sylveon generally requires high friendship or affection and knowing a Fairy-type move, with some variations depending on the game. In Pokémon GO, earning Buddy hearts or using the nickname trick are the main methods
