The Idolmaster Cinderella Girls (アイドルマスター シンデレラガールズ, Aidorumasutā Shinderera Gāruzu; officially stylized as THE iDOLM@STER CINDERELLA GIRLS) is a Japanese free-to-play simulation video game co-developed by Cygames and Bandai Namco Studios for the Mobage social network platform for mobile phones. It was first released on November 28, 2011, for feature phones, and compatibility was extended to iOS and Android devices on December 16, 2011. The game is based on The Idolmaster franchise, and features a cast of new idol characters. In September 2015, a music video game developed by Cygames titled The Idolmaster Cinderella Girls: Starlight Stage was released on the Google Play Store and Apple Store in Japan. The original game ended service on March 30, 2023, and was succeeded by its spinoff game and adaptations.
The story in Cinderella Girls follows the career of a producer in charge of leading and training prospective pop idols to stardom. Its gameplay follows a digital collectible card game format in which each idol is represented as a card, which the player may use to form a unit of idols to train in lessons, take to jobs, and compete against opponents. Cinderella Girls has made transitions to other media. An anime television series adaptation produced by A-1 Pictures aired in Japan between January 10 and October 17, 2015, and was simulcast by Daisuki. It was followed by a 3-minute short chibi slice of life anime series produced by Gathering that has been running since 2017. Various manga series, three sets of manga anthologies, two Internet radio talk shows featuring the series' voice actresses, image song singles and albums, and live concerts have also been produced.
