A card collection game for mobile browser by Crypton Future Media, Inc., featuring their Vocaloid characters. It was released on February 20th, 2012, and as of May 2026, is still ongoing.
A spinoff app titled "Hatsune Miku Graphy Collection - The Mysterious Music Comet" was made for iOS and Android. It was released on October 28th, 2014, and shut down on June 30, 2020.
A continuation to "The Mysterious Music Comet" was announced in December 2025, though no release date was provided.
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