XCI (NX Cartridge Image): This format is a "dump" of a physical game cartridge. It is often used with tools like the Mig Switch or by users who want to keep their physical games backed up digitally. Game Overview: Super Mario Bros. Wonder
In the Nintendo Switch homebrew and backup community, NSP and XCI are the primary file formats used for software. Super Mario Bros. Wonder Switch NSP XCI GUNC...
Latest Patch: As of April 15, 2026, Version 1.2.1 is the current software update, addressing minor fixes for those playing on the newer console. Scene Terminology: NSP and XCI XCI (NX Cartridge Image): This format is a
, a different Switch game often appearing in search results alongside "GUNC". Helpful Tips for Players Wonder In the Nintendo Switch homebrew and backup
Super Mario Bros. Wonder is a 2023 2D side-scrolling platformer for the Nintendo Switch that reinvents classic gameplay with transformative new mechanics. Game Overview Set in the Flower Kingdom