Aside from KanColle (which I played for a bit but left in the dust due to my little 360 renaissance trip), another fun little game making waves in Japan is a social smartphone app called ガールフレンド(仮) (Girlfriend Beta). Since I'm a grizzled garakei user, I haven't tried it personally, but it's just hard not to hear about it... this little whack is all over Nico, 2ch, and just about every other place in the net where my fellow ota brethren often convene.
It all started with a promo commercial for the game which left people all "Zu-kyuun" over a baby-faced foreign exchange student from France: Chloe Lemaire, voiced by the inimitable Sakura Tange.
She proved to be quite popular in the game. So popular that the other girls seemed to have little to no users pursuing them, and the official site later posted this appeal image:
"Don't just dote on Chloe-chan, listen to our voices too! *bawl*"
I loled. If I ever do decide to get a smartphone and this is still available, might just give it a whirl for more lulz.