A very cool parody of IDOLM@STER in OS-tan style!
The original idolmaster demo video.
The promo video. I think managing idols is much more fun compared to playing the game as idols. This is probably one of those SIM games.
IGN says it’s a game where you choose from a flock of girls, you dress your pop idol up (choosing from the sexiest, cutest or funniest outfits, depending on her style), then train her to sing and and dance and be personable (using rhythm-action controls and other minigame controls), all in the hopes of getting a chance at getting up on stage and making her a big star!
For those who do not know what OS-tan is.
The OS-tans are an Internet phenomenon on Futaba Channel; the OS-tan or simply OS Girls are the personification of several operating systems by various amateur Japanese artists. Although a pure fan creation, the appearance of each OS Girl is generally consistent across artists. The OS Girls are typically depicted as women, with the OS Girls representative of Microsoft Windows operating systems usually depicted as sisters of varying ages.
Source: Wikipedia <Link>