All good VNs are so dark nowadays =/
None.
It's not a good VN unless I can imagine myself in the situation and think of the situation happening to me except with other characters being people I know IRL.
Some VN's are really gay like Fate Stay Night. All the main character does is ";_; I SHOULD HAVE DIED IN THE FIRE" tons and tons of times. Constantly repeating itself just to make it seem much longer than it needed to be.
None.
saya no uta for "everyone dies" award of 2012