Learn how to play Nintendo 3DS on iPhone with Manic EMU from the App Store: install, import your own unencrypted .3ds files from iCloud Drive, tap to launch, and play with on-screen controls or a Bluetooth controller; use portrait or landscape, enable resolution scaling for sharper visuals, and expect solid performance on iPhone 14 Pro or newer while demanding titles benefit from the latest chipset; examples shown include Mario Kart 7 and Pokémon Omega Ruby; questions welcome in the comments.