Cheerilee's Garden was great, but maybe that's just cause I'm sick, morbid, and twisted. Still, I like that idea.
Cry of Fear is a horror game that follows Simon, a 19 year old, through his dealings with depression, anxiety, insanity, and then an ultimate unveiling of the truth of the fateful night at the beginning of the game (he got hit by a car). Basically, it's scary as hell, creepy as hell, intense, and fun. And I'm thinking I can make it work for Twilight.
Agony might be good. Not many people know Cry of Fear so I can include the game title in the description (I'm doing it on FIMFiction.net).