Before downloading or patching your copy, it is important to know that the original 3DS version has several distinct features—and quirks—compared to the newer Rune Factory 4 Special on Switch and PC.
If you download a .cia file, it may be encrypted. Citra requires decrypted files (usually in .3ds or .cci format) or specific AES keys to run them. rune factory 4 decrypted 3ds undub rom reg link
Alternatively, you can add aes_keys.txt to your Citra system directory (found in AppData\Roaming\Citra\sysdata ) to allow Citra to decrypt files on the fly. Important Gameplay Notes for the Undub Before downloading or patching your copy, it is