Witch Girls Adventures
Witch Girls Adventures is a Harry Potter-esque role-playing game primarily aimed at a tween/teenage female audience. Due to its combination of underage magic-using girls, vore and shrinking fetish overtones, and obvious condonation of murder for trivial reasons, it is also guaranteed to spark the imagination of /tg/ whenever it is posted.
An unofficial Harry Potter supplement is also available; the game's creator statted most of the main characters to be played at conventions.