Realms are dimensions of predetermined size, usually occupied by an only single world. Each realm exists on a separate plane of reality, allowing for a diverse variety of biological and sociological configurations. The thunder god Raiden states that all realms are in a constant state of flux, shifting like endless dreams.
The realms were created by the Elder Gods, who did so after splitting the One Being through the use of the Kamidogu. Despite its separation, the One Being would subtly influence the inhabitants of the realms, hoping to re-merge back into its true form, having mostly used rulers of Outworld as proxies to merge the realms back together.
When in some of these realms, Raiden's godly powers are weakened significantly.
Mortal Kombat: Deception established six realms: Earthrealm (aka Earth), Outworld, Netherrealm (aka Hell), Edenia (aka Eden), Chaosrealm, and Orderrealm (aka Seido).
Thousands more realms are implied by Baron Reyland in Mortal Kombat: Conquest
Known and unknown realms are stated to exist by Havik, the cleric of chaos, in the Mortal Kombat X comic.
In the New Era, Liu Kang, now turned Fire God in charge of being the new Keeper of Time, recreated the Realms as they originally were when the One Being was split apart.
Known Realms[]
- Earthrealm
- Outworld
- Arnyek Islands (merged with Outworld)
- Osh-Tekk (merged with Outworld)
- Vaeternus (merged with Outworld)
- Zaterra (merged with Outworld)
- Edenia (merged with Outworld in the 2nd and 3rd Timelines)
- Orderrealm (known as Seido by its inhabitants)
- Chaosrealm
- Netherrealm
- The Heavens (realm of gods)
- The Void
- Non-canon
- Dreamrealm (an ethereal plane of existence)
- Hinpar (merged with Outworld)
- Ilkan (also known as the Crystal Realm)
- Nightmare Realm
- Rellim Ohcanep
- Xaa
- Zonkera
- Water Realm
- DC Universe
- Apokolips
- Oa
- Metropolis
- Gotham City
- Krypton
- Themyscira
- Keystone City
- Mount Olympus