The Basement

The Basement begins at floor -1 and ends at floor -667. It can be entered through the trapdoor on floor 0, using the Basement Key (which is found on floor 52). Upon entering, you will receive the basement badge. At the end of the Basement is a locked door, which leads to The Cellar.

Black Figure
Some floors have a small black figure with a red light around it and you can hear the sound of a crying girl. If you touch the figure, it will stand up and chase you to try to kill you. Doing this also makes all others you encounter try to kill you too.

If you touch the figure while holding the Teddy Bear, you will not die, and instead be teleported to a house, where you can get the Bedroom Key.