: While NSPs are the standard for official digital purchases, they are also commonly used in the homebrew and modding communities to install game backups or modifications. Using NSPs from unofficial sources to bypass official storefronts can lead to a console being banned from Nintendo's online services.

The gameplay of Hatsune Miku Project DIVA MEGA39's is similar to previous games in the series. Players tap buttons in time with music and vocals performed by the virtual singer Hatsune Miku and other Vocaloids. The game features a variety of modes, including:

The game is built on the robust arcade-style mechanics popularized by Project DIVA Future Tone . Players press a combination of face buttons and directional inputs to match icons flying across the screen, timed to the rhythm of high-energy Vocaloid tracks.