Hatsune Miku: Project Diva
Hatsune Miku: Project Diva is a rhythm game where players press buttons in time with Vocaloid songs across five escalating difficulty levels. Modules — Vocaloid characters or costume variants — appear in music videos depending on song type (solo or duet), but are not controlled. Progression is strictly linear: clearing Normal unlocks Hard, and completing songs unlocks new songs. It was successful in Japan for Sega and linked to their 2010 holographic concert work. No narrative, no multiplayer, no customisation beyond module selection. It asks for timing discipline and rewards it with more timing challenges.