An for Super Smash Bros. Ultimate is a digital backup of the game's physical cartridge data, primarily used for emulation or on modified consoles. Unlike the eShop's NSP format, which represents digital downloads, XCI files are "cartridge dumps" that contain the raw data found on a retail game card. Understanding Smash Bros XCI
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This legal action underscored a critical point: while the XCI format is technically a backup mechanism, its usage in the Smash community largely circumvented the need for ownership. The ease of downloading a pre-dumped XCI, trimmed of its padding and ready for emulation, eroded the "format shifting" defense often used in emulation circles. smash bros xci