The Idolm@ster series is (in)famous for giving gamers the
ability to create and manage their own teenage female popstar
group. But what exactly does that entail?  Well, besides a lot
of talking and dialogue trees, The Idolm@ster 2 is mostly a
collection of music mini-games combined with light RPG elements.
You 1) do lessons to raise your stats so you can 2) perform at
various concerts and events to gain fans/money so you can 3) buy
new costumes (which also raise your stats), before repeating the
process again. To see these mini-games and other gameplay in
action, check out the video above.