If you're looking for the What If's in the Full game version click on the traffic sign and for the Halloween special click on the moon.
JokerLeader updated the walkthrough mod so you can now play the main game and the what-if's without having two versions games(his walkthrough and normal).
This game was good because of it's models and sex scenes, but after so much sex scenes, the story don't sustain the gameplay alone. Started incridible, but lost it self in the mid to end.