7th Dragon 2020 is a PSP game by Sega. In addition to its theme song "Seventh Heaven" being composed by sasakure.UK, a lot of other VocaloPs are also involved."7th Dragon" has an option to change the in-game BGM to "Diva Mode", which are Hatsune Miku versions of the BGM. These songs are remixed by famous VocaloPs: ATOLS, 8#Prince, PAwLaboratory., kiichi, sasakure.UK, Sorairo Club, nak-ami, baker, millstones, whoo, baker, monaca:factory, Wonderlandica.
Limited edition version of the game comes with a CD that contains 8 tracks, some of the tracks are to feature Hatsune Miku.
7th Dragon 2020
Limited edition version of the game comes with a CD that contains 8 tracks, some of the tracks are to feature Hatsune Miku.
Source 1: http://jrpg.jp/news/?eid=16&nid=221
Source 2: http://dragon2020.sega.jp/information.html