Earth 1

Earth 1 was the first universe, which was destroyed after the New Gods found out about the Slayers.

A Slayer was sent down to Earth to dispose of the New Gods quickly, which he did, later killing all beings in the universe and making it inhabitable by filling it with void energy. It could still be accessed, but only using a portal opened with a special crystal. The universe was completely destroyed by Spartan in the year 2030, killing the Slayer in the process, and turning the universe into The Ruins of Earth 1.