Install the required system firmware matching your game files.

Add the folder containing your Mario vs. Donkey Kong Base ROM to the game directory path.

| Format | Source | Benefits | Ideal Use Case | | :--- | :--- | :--- | :--- | | | Nintendo eShop (Digital Download) | Cleaner install , faster loading speeds, smaller file size, easy to update | Emulators (Yuzu/Ryujinx) and CFW installations. | | .XCI | Cartridge Dump (Physical Copy) | Acts as a "virtual cartridge", doesn't require installation into system memory | Flashcarts (like Mig-Switch) or users who prefer a drag-and-drop solution. |

In a broad sense, a "ROM" (Read-Only Memory) is a digital copy of a video game's data. Historically, this referred to cartridge data from older systems. On the Nintendo Switch, a raw cartridge dump is typically saved as an file. This format mimics the physical cartridge itself. What is an NSP File?