: NSP stands for Nintendo Submission Package, which is a file format used by the Nintendo Switch for digital distribution of games and other content. While NSP files can be used to install games, obtaining them for free from unauthorized sources is not recommended as it can lead to piracy and potential security risks.
Alternatively, maybe the user is referring to a game where you switch between memories of heroes, using a NSP (Nintendo Switch Portable) file for free. But that seems unlikely. So the safest approach is to create a story around a Kamen Rider character dealing with memory-related challenges, possibly involving a Switch game as a tool or element in their journey. kamen rider memory of heroez switch nsp free d best