Sparks: A Game of Magical Girls and their Allies

I didn't approach this as a game system, but rather worldbuilding ideas. There are a lot of great concepts that make sense if applied to various magical girl anime and manga. Toward the end of several sections, ideas are given for how things might change depending on the maturity level the players want. From the straightforward and simple Pretty Cure types, to the moral and ethical dilemmas of Madoka Magica subversions. This is a great resource for magical girl enthusiasts.