The file name in your query refers to specific digital formats:
Potion Permit | Out Now for Nintendo, Xbox, PlayStation & Steam Download Potion Permit [18DLC][US] NSP rar
Accessing game files through unauthorized sources is generally considered illegal and violates copyright laws. The file name in your query refers to
This report details the availability and status of Potion Permit for the Nintendo Switch. While the game is widely available through legitimate storefronts, the specific file format mentioned ("NSP rar") is typically associated with unauthorized distribution channels. Download Potion Permit [18DLC][US] NSP rar
This is the standard format for Nintendo Switch digital software packages.
Unofficial downloads often contain malware or corrupted data.