These are files typically used for digital content from the eShop. This format is used for base games, DLCs, and digital updates.
If you have a powerful GPU (like an RTX 3060 or better), set the resolution scale to 2x (1440p) or 3x (4K) for incredible visual clarity. rom nintendo switch yuzu
If you own a Switch and its games, emulation can be a preservation tool. If not, you're entering high-risk territory. These are files typically used for digital content