smarkyie releases NSP Box 3.0.0, a PC app that packages Switch 2 games the user has already extracted for use in emulators
On Nov 1, 2026, developer smarkyie released version 3.0.0 of NSP Box, an experimental Windows app. It takes the files of a Switch 2 game that the user has already extracted from their own copy and combines them into a single NSP package (the Switch's game package format) for use in PC emulators, programs that imitate the console on a computer. NSP Box does not run anything on the console. What's new in 3.0.0 is a dedicated tab for DLC (downloadable content, such as expansions), a new look with redesigned icons and interface, and more supported versions in the optional tweak for the Eglantine and PokeDinner emulators.
smarkyie/NSP-Box · GitHub
Context
On DLC, the README itself says there was a single successful test, done by one user, and that this does not mean general compatibility. The emulator tweak, which debuted in version 2.0.0, is optional and can be undone: with it, the emulator reads the information already stored inside the package and no longer needs an extra file next to the game. The author states that piracy is not supported and that the app does not include games, keys or firmware; Switch2Unlock does not provide any of these either. The author describes the app as experimental, with little real-world testing. This site does not publish step-by-step guides or download links.