ALGORITHM is DanceDanceRevolution A's EXTRA SAVIOR 夏、真っ只中！DDRの夏を遊びつくせ！ song. It can be unlocked from August 2nd, 2018.

As of DanceDanceRevolution A20, it is available by default.

ALGORITHM was added to DANCERUSH STARDOM as part of the SUMMER DANCE CAMP 2020 event. It could be unlocked from July 7th to September 7th, 2020, by collecting 3 stamps for DANCERUSH STARDOM.

From January 27th, 2021 onwards, it can be purchased with 150 ★.

ALGORITHM - SOUND HOLIC feat. Nana Takahashi

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