Realm of Twilight (Total War)

The planet called the Realm of Twilight is one of the main settings of Hyrule: Total War the other ones being the planet Hyrule, another planet in the cosmos, and Termina, a dark reflection of Hyrule created by Majora.

Rise of Ganon
Following the battle at Hylia Marine during the Rise of Ganon era, which sees the final defeat of Bongo's Dark Interlopers and the Gerudo and Fairies who have come to seek the Triforce, the Hylian Princess Nylin Zelda I give the prisoners of war to the Gerudo Circle of Warlords. These Warlords then banish these prisoners into the Mirror of Twilight, a mysterious portal in the Arbiter's Grounds, which they thought was the entrance to a void of no return.

Unbeknownst to the Warlords, the Mirror actually lead to the Realm of Twilight. After their arrival the prisoners struggle to survive in the harsh wasteland, and many of them die shortly after their arrival. However those that survived form a new civilisation, and after thousands of years these criminals eventually evolve into the Twili.

Geography
True to its name, the Realm of Twilight is in a state of perpetual twilight. The land is black, bleak and barren, with far and few settlements.
 * Palace of Twilight
 * Howling Canyons
 * Nether Pass
 * Twisting Voids

Major Powers within the Realm of Twilight

 * The Twili Empire
 * Tribes of the Nether Rifts

De facto Powers

 * Church of Majora
 * Great Fairies
 * Bonemold Monks

Major Religions within the Realm of Twilight

 * Church of Majora
 * Church of the Golden Goddesses

Notable Individuals

 * Veran
 * Una
 * Morsheen
 * Mizorant
 * Zant
 * Midna
 * General Onox
 * Argorok
 * Yorinu

Major

 * Twili
 * Dragon (one known, Onox)

Minor

 * Shadow Insects
 * Twili Spiders
 * Shadow Kargaroks

Resident Aliens

 * Fairies
 * Parella