: It is generally considered legal to "dump" your own ROMs from physical discs you own for personal backup. Downloading copyrighted ROMs from the internet is typically a violation of copyright law. systems:wiiu [Batocera.linux - Wiki]
: An "unpacked" folder structure. It is easily readable by emulators and allows for easy modding. wii u roms
These are raw or compressed disc images. They typically require a "Title Key" to be decrypted before they can be played. : It is generally considered legal to "dump"
: Many enthusiasts use "homebrew" methods to run backups on original hardware. This often involves using tools like Wii U USB Helper to prepare files for an SD card. It is easily readable by emulators and allows
: The installer format used by the actual Wii U console. These must be "installed" to a Wii U or decrypted for emulator use. Emulation and Hardware