Godly Realm:
As a god, you have the ability to isolate a bubble of reality from the rest of the multiverse and make it your own personal space, whether that be a war-room, a temple, a library, a forge, or whatever else befits your sovereignty. Additionally, you can grant your faithful followers the ability to come and go from your plane freely without impediment. All others must have your express permission to enter your Domain.
Being the a Domain is considered the home of the owner god, the bubble that contains the domain is warded by a barrier that provides numerous protections from external factors. The Barrier is semi-sentient. The Domain Barrier exists at the edges of the Domain from bother the inside and outside perspectives, and fully encompasses the Domain. Under normal circumstances, a creature cannot simply enter a domain if the god that owns the domain does not allow for it, but a Domain can be invaded through one of two methods.
These bubble are typically called Domains, meaning that there is some form of order and cohesion to their apperance and anatomy. But gods of a more primal persuasion, such as a monster, an ancient pre-civilization god, a Divine Dragon, or a Litch, might have a more wild and free flowing bubble more commonly called a Lair. The difference only manifests in the name itself and the physical appearance of the world within the bubble; functionally, Lair and Domain are interchangeable.
You have some control over the environment within your realm, controlling the temperature and minor elements of the environments such as smells and background sounds.
Domain Invasion and Destruction:
A godly domain is nigh impregnable be forces that the owning god does not wish. But nigh impregnable and completely invincible are not the same thing. It is possible to circumvent the barrier the encompasses the Domain, namely through one of two methods.
Barrier Destruction:
All Domain are shielded by a barrier the provides numerous protections from external factors. This includes complete undetectability from the outside, complete immunity to spells originating from the outside. This is because the interior of the barrier is considered a completely separate plane form the exterior. As such, this barrier needs to be destroyed in order to invade without the barrier stifling the invader's Divine Rank. Invaders be warned. The Barrier is a powerful construct and will not go down easy. Barriers typically need to be taken on by a group of gods to have any reasonable chance of success. Once the Barrier is defeated, it is broken open and the Domain can be invaded. But be warned, regardless of Place, Plane, and Rank, the owner of the Domain will be made instantly aware of your actions the moment you begin attacking the Barrier.
The Barrier is not a vessel in which the world it is contained, but rather simply a wall that isolates it. Destroying the Barrier has no direct impact on the world within it, and the world within does not come spilling out. Rather, is is not simply open for invasion be external factors without penalty or defense. Once broken, a barrier does not stay down forever, or even for all that long. In as little as 24 hours, a broken Barrier will reconstitute itself completely, meaning that the invading forces only have 24 hours to prep, invade, and declare victory.
If the Barrier reforms before the invasion begins, it is as if it was never destroyed in the first place. If it reforms during the invasion, the Divine Ranks of all gods not welcome in the Domain are halved, as if they invaded by Divine Imposition rather than forced entry.
In the event the owner of a Domain dies, the domain collapses, taking a full hour to do so. Once the Domain completely collapses, all creatures and objects in it are ejected to random locations of the astral plane.
(Siros has a heaven which is considered his godly realm but the diffrent between other godly realms is it considered a after life. so souls can be collected and judged. also, a after life realm can contain special constructs as the river of reincarnation, the holder of worlds, summoners temple.)