You play as a cute young woman who can transform and get different costumes and abilities by "magicking" certain objects, like swords, bows, brooms, etc.
At the first time, you didn't believe her of course.
ZONE games aren't really games, but sweet Jesus does 4chan love them and each one is well-made. Another Illusion game, so it's good stuff as usual.
You can create a classroom with 25 students complete customizable (the male customizations are really poor compared to the female ones) and then see how they react with each other.
No eroge novels (aka 'erotic visual novels') in this list: there are so many of them that we have made a page just for them.
We also have a page for Adult interactive Fiction for smut made by non-Japanese writers.