The Eldritch Universe
There was a universe invaded by chaos and horror, where trillions perished every day, and wars were not just common but enforced. An extended period of peace was considered a sin and could result in your entire civilization's destruction.
In this nightmare universe, worlds were not heavenly bodies that slowly grew alongside its inhabitants, with Cosmic Walls meant to protect those in the Physical Realm from the danger of the void. While they still had spheric bodies, they were fully sentient creatures with billions of parasites inside them.
If one of those parasites devoured enough of the competence, it would obtain the ability to fuse its Primordial Essence with the Universe Will, become an actual sentient creature, and reach the Soul Realm.