THE IDOLM@STER "Chocolate Disco" The Idolmaster (officially romanized as THE iDOLM@STER) is an arcade and console game released only in Japan by Namco (now Namco B The Idolmaster (officially romanized as THE iDOLM@STER) is an arcade and console game released only in Japan by Namco (now Namco B The Idolmaster (officially romanized as THE iDOLM@STER) is an arcade and console game released only in Japan by Namco (now Namco Bandai) on July 26, 2005. It was released on the Xbox 360 on January 25, 2007. The game follows the career of a producer who works for the fictional 765 Production studio and has to work with a selection of nine prospective pop idols.