I've been playing a game recently, which as the title of this journal suggests, it's called Yume Nikki. I finished it not too long ago, and I want to give my two cents about it.
In this game, you play as a girl named Madotsuki, who happens to be a Hikkikomori. (Japanese for shut-in) You find yourself in her very boring room consisting of a bed, a desk, a TV complete with game console, a door leading to the balcony, and a door that you can't go through quite yet. That's basically all you can do until you go to bed.
When you go to bed, you will find that you can now go through the door. Beyond this door however, are 12 doors in a circle.