World of One God

The World of One God, referred to by Patty Jackson as the "Land without Magic" is a mundane alternate universe created by Yahweh, in which magic is mostly unusable and Supernatural beings do not exist (aside from Yahweh, Angels, and possibly Jinn). The World of One God runs parallel to the Riordanverse as well as the worlds of the stories from "Rick Riordan Presents".

The void of Chaos existed in-between the various dimensions, each universe like an island and Chaos is the ocean.

Description
The World of One God is in most appearances like that of the Riordanverse, but with key differences. The Pagan gods do not exist in this world and neither do monsters. This Earth also doesn't have most forms of magic. All the famous historical figures who were demigods in the Riordanverse were simply mortal in the World of One God.

Demigods and Magicians from the Riordanverse lose their powers when transported to the World of One God. For monsters, whatever mist disguise they used to hide on their Earth becomes their real body when stuck on this alternate Earth. This can be a traumatic change.

Greco-Roman Demigods at least remain ADHD and Dyslexic which means their brains are still hard-wired for battle and the ancient languages. Their bodies might not be able to keep up with them though.

Conversely Yahweh is basically omnipotent in this dimension and Angels (both Heavenly and Fallen) seem much more powerful as well. When Yahweh leaves this Earth to go to the World of Many Gods he is far weaker. Mortals from the World of One God who cross over to a Pagan Earth will be able to see through the mist.

Access and Escape
The World of One God can only be accessed by means of magic. There is a spell that can be utilized to open portals to this alternate earth but escaping this reality is more difficult as the same spell is useless once you're inside the World of One God.

Angelic beings can travel from reality to reality as they please and have the ability to send and retrieve beings from the World of One God.

Surprisingly the magic keys given to members of the Scribe Society that let them travel from realm to realm, still work in the World of One God and can allow them to leave it whenever they wish.

Pagan deities are incapable of crossing over into the World of One God or of being sent there.