Paper Mario: The Thousand-Year Door is a beloved role-playing game that was originally released on the Nintendo GameCube in 2004. The game has since been re-released on the Wii U Virtual Console and, more recently, on the Nintendo Switch as part of the Nintendo Switch Online service. However, some users may want to install the game using an NSP (Nintendo Switch Package) file, which allows for a more straightforward installation process. In this article, we'll guide you through the process of installing Paper Mario: The Thousand-Year Door on your Nintendo Switch using an NSP update.