Inside the archive, you will find an NSP (Nintendo Submission Package) file. This is the digital format used for games downloaded from the Nintendo eShop.
This is a compressed format used to reduce file size for storage or sharing. You must extract it before use. Two Point Campus (NSP)(Base Game) (2).rar
This specific file contains the core game data without additional DLC or updates. How to Use the File Inside the archive, you will find an NSP