 If you liked
Mahou Shoujo Site
|
 ...then you might like
Higurashi no Naku Koro ni Sotsu
|
Using psychological & tension, both anime have a lot of real violence and typical mahou shoujo violence. About how one gains the power to subdue those closest to him, there is an admin/kamisama who gives power. Can give off almost same horror-action vibes, though Mahou Shoujo Site is more like a threatened world whereas Higurashi no Naku Koro ni Sotsu has a lot of different worlds.