: If you plan to use an emulator like Citra, the ROM must be

for advanced 3DS editing from the community at Project Pokémon. Check out the Universal Pokémon Randomizer ZX Wiki

: A specialized ROM editor and randomizer specifically for 3DS Pokémon games. It offers deep customization for trainer battles, wild encounters, and base stats. It is available on Project Pokémon How to Randomize Your Game Obtain a ROM : You need a

: This is the most modern and user-friendly choice. It supports 3DS games like X and Y, provided you have a decrypted ROM file. You can find the latest releases on the PokeRandoZX GitHub

Click "Open ROM" and select your decrypted Pokémon X/Y file.

. Tools like the "Batch CIA 3DS Decryptor" are commonly used for this. Run the Randomizer Open your randomizer tool (e.g., PokeRandoZX).