Limbo

Occasionally, something can go wrong. Sometimes in your travels, you will slip out of what is and enter the place of what should not. Limbo is a dreary space of cast of worlds and broken realities, and the only way to escape is to venture down deeper in Limbo, until you find the black voids near the bottom. Touching these will teleport the player back to the overworld, but at an entirely random location. Dying in a pocket dimension is a sure fire way of being sent to to Limbo, in addtion to overusing an Unstable Door.