THE IDOLM@STER SP (アイドルマスター SP, THE IDOLM@STER SP?) is a PSP game released in 3 different versions: Perfect Sun, Missing Moon, and Wandering Star.
About[]
The game introduces a new game feature called rivals. The rivals are from an Idol Production Studio called 961 Productions with their unit Project Fairy. It's the producers job to produce one of 9 idols (3 per game).
The only differences about each version of the game is the idols and the rival.
Perfect Sun[]
In Perfect Sun, you choose to produce one of three idols. (Same for the other 2 versions). The idols are: Haruka Amami, Makoto Kikuchi, and Yayoi Takatsuki.
The rival is: Hibiki Ganaha
Wandering Star[]
In Wandering Star, you choose to produce one of three idols. (Same for the other 2 versions) The idols are: Yukiho Hagiwara, Iori Minase, Ami Futami
The rival is: Takane Shijou
NOTE: Apparently, you produce Ami Futami and Mami Futami at the same time.
Missing Moon[]
In Missing Moon, you choose to produce one of three idols. (Same for the other 2 versions). The idols are: Chihaya Kisaragi, Azusa Miura, and Ritsuko Akizuki
The rival is: Miki Hoshii