The file you are referring to, GROOVE COASTER WAI WAI PARTY (NSP)(32 DLCs).rar , is an unofficial package typically found on piracy or emulation sites like NxBrew for use with Nintendo Switch emulators such as Yuzu. It contains the base rhythm game along with a collection of its many downloadable content (DLC) packs. Game and DLC Overview
As of March 2025, the game has reached its final content update with the release of Original Pack 10 (Final Boss) . In total, there are over 50 DLC packs available. Types of Packs: DLC typically includes themed sets such as: GROOVE COASTER WAI WAI PARTY (NSP)(32 DLCs).rar
Featuring popular tracks from various Vocaloid producers. The file you are referring to, GROOVE COASTER
To use an .NSP file legally on a PC, you must own a physical or digital copy of the game and "dump" it from your own Nintendo Switch console. In total, there are over 50 DLC packs available
For a look at the content included in some of these specific DLC packs, check out these overviews:
is a high-speed rhythm game originally developed by Taito. While the base game includes a large library of tracks, it is heavily supported by periodic DLC releases that add new songs, "navigators" (character guides), and avatars.