The Dream Generator. It defined the next stage of Human, evolutionary, battle. To be precise, there was no other type or kind of battle that matched what nearly ended the world through The Dream Generator.
To be precise, there was only one way in: through a portal of only a kind may refer to as the Prolexic Portal. The Prolexic Portal existed within the imagination, and the only way into it, was through dreaming; a battle of dimensional thoughts, physical and all, relying only on the place of origin to be your victory. If you didn't make it out by the end of the battle, your mind, and, consequentially, your body, were to be taken over, by the enemy, Human, or, not.