They do good work over at TFgamesite. There are a few I''m hoping make it to completion.
I've advertised VampYou a few times here, and I lurk on a regular basis, but I noticed kyuven's comment on a lack of corruption games out there. For months now VampYou has been producing RPG Maker corruption games (with a vampire theme of course).
The most recent of which has a legit play time of over 2 hours.
And so I'm actually adding something here and not just advertising my site here's some of the in game character art used.
Here we have the heroine, her turned into a vampire, how she appears in a mirror, her as a vampire in a new outfit, her masquerading as her former human self, and finally her caught in the act when in front of a mirror.
Hope you enjoy!