: While U.S. copyright law (17 U.S.C. section 117) may allow users to create a backup copy of a program they legally own for personal use, this generally does not extend to downloading a second copy from the internet.

: Emulators themselves, such as Citra or its successors like Azahar , are generally considered legal as they are original software and do not contain proprietary Nintendo code. How to Play Detective Pikachu on an Emulator

Downloading a for a 3DS emulator is a complex topic that involves both technical steps and important legal considerations regarding copyright. Legal Considerations