Prior to the anime adaptation, Cinderella Nine also had music and drama CDs, live shows, and a gag manga by Bkub Okawa in addition to the mobile game.
If you weren’t familiar with the original mobile game, you’re not alone; but the anime seems to have changed that.
Recent anime series Cinderella Nine comes from a mixed media project of the same name, in which you help to train aspiring anime girls to become high school baseball greats.