Dream World is an area accessed from the Sanctuary (after losing to Vins on the 3rd playthrough) and Debug Room.
Description
It contains three seperate rooms and a hallway. The first room contains the Pucci family (Enrico, Domenico, and Perla). The middle room contains Vins and Wes Bluemarine as a baby. The room on the right matches the room at the protagonists home, complete with a bed that the protagonist can sleep in. The hallway contains a demon, a dad, and an orb that will return you to the title screen.
Talking to any character besides the demon will cause them to say a variety of things, though they won't turn to face the protagonist. The demon will always say the same thing, and will turn.
Easter Egg
Sleeping in the bed enough times will cause the place to change. After a few times sleeping, the window will turn black and display "TURN IT OFF" and "PRESS F12" repeatedly (a reference to a Shin Megami Tensei urban legend), before returning you back to the room. This will cause all characters besides the player to disappear, and a dark humanoid figure to appear in the middle. Interacting with the orb will cause the figure to move to the door. Its eyes will enlarge after a period of time. Selecting to go back to the title screen will cause the orb to disappear, and your character will erratically move before returning to the title screen.
If you stand in front of the dark figure before its eyes enlarge, the message will appear again, and eyes will gradually emerge from the screen. Two messages will appear. The first is a black message saying "REALITY IS COMING FOR YOU", the second is "I WILL CAPTURE THOSE WHO ESCAPE REALITY" in the same font color. When the second message appears, gray hands appear on the screen.