Of course, the analogy of the house with the universe is not entirely accurate. It creates a false notion that the space within the universe is the internal part of the universe. It might also lead one to believe that the void Universe is in the shape of a box. World gods will tell you that these two premises are not accurate.
The space-time continuum of the void Universe is formless and shapeless. One cannot say what its true form is but one can simplify the shape of the existence of the void universe for lesser minds. In the endeavor to dumb down higher-level multidimensional physics, the walls of the house, or if you will, the dark side of the universe is the mid-section of the universe. While the area that weak beings live in is the external part of the universe.
The external part of the void universe is constantly expanding outwards while the Dark side remains constant and bears the weight of the external/normal part of the universe. If the totality of the universe is dumbed down, it can be likened to a sphere. The middle layer of the sphere is the dark side and the external layer is the light side.
If you know anything about pressure, then you must know that pressure increases when force increases while the area that it acts upon remains constant. In order words, the pressure on the inhabitants of the dark side increases as the normal Universe expands.
World gods are practically lifting the weight of the sky. That is the most troublesome thing about living in the dark side of the universe. Bearing the weight of constantly increasing pressure in a lifeless and harsh environment devoid of interchangeable energy.
But all three problems, the lack of light, the frozen space, and the heavy pressure are nothing to a world god. They don't even feel any of these problems. It is said that life will always find a way and it did for the dark side of the universe too. Except world gods cannot be called living. Living connotes a possibility of dying.
Even Origin gods can't die permanently much less a world god. For world gods, when there is a Will, there is a way to do anything including cheating death. World gods can do a lot of things with their will. When your very thoughts are reinforced and empowered and strengthened by an entire world, then you can do a lot of things. Existing for all of eternity is the least that they can do
Living or not, world gods thrive and live in the dark side of the universe. They can fully exercise their power and do anything they want here. By anything, I mean ANYTHING. The hostile conditions do not impede them in any way. They do a lot of things including forging.
A Certain entity moved through the dark side of the universe like a shark prowling the ocean depths. This entity looks like a normal battle sage monkey without any bloodline. It has white fur. Except for a few oddities here and there, you wouldn't think anything special of this battle sage. The three white tails that it has means nothing. It could be purely cosmetic. But the fact that this entity can exist in the dark side of the universe is more than enough to know that this entity is at least as powerful as a world god.
This world god found a bubble of influence in this otherwise dense environment that feels like frozen amber. The world god knocked politely on the bubble. It can force decide to pit its Will against the Will of the one that created the bubble and force its way in but it knocked politely because it didn't come for a fight and politeness doesn't cost much. It didn't have to wait for long before it got a reply.
An intent echoed outward from within the bubble of spaces. The message within the intent said, "Come in."
The world god touched the barrier of the bubble and phased through it to appear in a space as large as a plane. It is like the waters of the ocean have been forcefully spread apart to create a vacuum similar to a giant bubble at the bottom of the ocean. The space is not a plane, it's just the size of one. It needs to be that size or it won't be able to accommodate world gods in their smallest form possible. When you see a world god, you don't wonder anymore why a realm tree doesn't want them around.
The guest world god looked around and found its host very busy at the center of the bubble. The host is a serpentine humanoid with thousands of arms and an obsidian crown on its head. It has a muscular and extremely long tale that is attached to the base of its torso. It also has a serpentine head.
This serpentine world god is very busy right now. It is busy forging something. The thousands of arms that the serpentine world god possesses are in a flurry of movement assembling what looks like cubes. These cubes come in different shapes and sizes each unique in not only mass, energy content, and resonance factor but they all fit together seamlessly to form the finished product.
The serpentine world god is assembling this finished product himself. It has to be a very powerful and complicated product for the world god to forge personally instead of just Willing it into existence from its mind.
The guest said to the host. "I see you're still busy."
"Are you here to gloat?" The serpentine world god asked without paying attention to his guest.
The voice of the host sounds like the hissing of a million snakes. It is enough to break the mind of a lesser being. But this beings are far from lesser and the hissing is not an attack. It is merely a sound created through the flunctuation of the fabric of the universe instead of the vibration of matter.