.nsp

Extension: Nintendo Submission Package

The .nsp file, or Nintendo Submission Package, is a crucial element in the process of bringing games to the Nintendo Switch. It’s not a file format intended for end-users; instead, it’s a developer’s tool. Think of it as a highly organized container holding everything Nintendo needs to review and release a game: the game’s executable code, all its graphics and sound assets, text files, and other essential metadata. This metadata includes important information like the game’s title, description, rating, and developer details. Essentially, it’s a complete, ready-to-publish version of the game. Opening an .nsp file directly isn’t something a typical gamer can do; it’s not designed for standard installation like a .exe file on a PC.

Because .nsp files are intended for internal Nintendo use and developer submissions, there isn’t a standard program designed to open them directly. Attempts to open them with typical file viewers will likely result in errors or no action. While some third-party tools claim to allow users to install games from .nsp files, using these methods can void your Nintendo Switch warranty and potentially introduce malware or other security risks to your console. Therefore, it’s strongly recommended that users only obtain Nintendo Switch games through official channels like the Nintendo eShop to ensure a safe and supported gaming experience. Downloading games from unofficial sources can lead to serious issues and is against Nintendo’s terms of service.