• Dothraki (Lekh Dothraki), the language of the eponymous people.^[20]
• High Valyrian (Valyrio Udrir), a literary language once spoken in Valyria.^[20]
  • Astapori Valyrian, a descendant of High Valyrian spoken in Astapor.^[21]
  • Meereenese Valyrian, a descendant of High Valyrian spoken in Meereen.^[22]
• Mag Nuk ("great tongue"), the language of giants. It was only used for one line.^[23]
• Skroth ("ice"), an unused language that was meant to be spoken by the White Walkers.^[24]
• Asshai, an unused language that was meant to be spoken by the Asshai'i.^[25]
• Lhazareen, an unused sister language of Dothraki that was meant to be spoken by the eponymous people.^[26]
• Gerna Mohr (or Gerna Moussha), an unused language that was meant to be spoken by the Children of the Forest.^[26]

• Castithan (Kastíthanu), the language of the eponymous species. It has its own abugida called Fajizwalino.
• Irathient (Thwelu l'Irathi), the language of the eponymous species. It has its own abugida called Izra.
• Indojisnen, the language of Indogenes. It has its own syllabary called Hazugimari.
• Kinuk'aaz ("our language"), the language of the Omec. It has its own alphabet called Zaduusel.
• Yanga Kayang, an unused language that was meant to be the Liberata's.

• Inha ("we"), the language of witches. It has four varieties (referencing the four countries of the Land of Oz), called Water Inha, Fire Inha, Wind Inha and Stone Inha.
• Munja'kin, the language of the eponymous people.

• Ravkan, the language of Ravka, which mainly appears in writing as it is rendered as English in most of the scenes where it is spoken. It has its own alphabet called Im Shaliloriyi.
• Fjerdan, the language of Fjerda. Peterson created this language with Christian Thalmann.
• Kerch, the abugida of Kerch. It does not have an associated conlang, instances of written Kerch are actually coded English texts.
• Kerch sign language.
• Zemeni, the language of Novyi Zem. It has its own abugida called Isunuche Zemen. Peterson created this language with Jessie Peterson.
• Shu, the language of Shu Han. It has its own alphabet called Shighraad Shu. Peterson created this language with Jessie Peterson, and its writing system was created by Christian Thalmann.

• Orcish, the language of orcs.
• Draenei, the language of the eponymous species. It was only used for one line.
• Common, an unused language that was meant to be the humans'.

• Övüsi (Övüsi Kieru, "Elvish tongue"), the language of elves. It has its own abugida. An older version of Övüsi was also used for one line.
• Bodzvokhan (Bodzvokhan Dǝzhn, "farmer's language"), the language of orcs. It has its own abjad called Vukht as well as a Cyrillic alphabet.

• The Christmas Chronicles
• The Christmas Chronicles 2

• Dune
• Dune: Part Two

• Chakobsa, the language of the Fremen, as well as the corresponding sign language. It has its own abugida called Dinlih.
• Sardaukar, the language of the eponymous force. It was only used for meaningless chants.
• House Atreides' sign language.

• Veda, the language of the inhabitants of Veda. It has its own abjad called Welqor ("stack-mark").
• Afata, a descendant of Veda spoken by the eponymous people. It has its own abugida called Thala ("vine").
• Gandal ("impure language"), a descendant of Veda spoken by humans. It has its own alphabet called Shul ("pure").
• G'vunna (Zudǝllǝ g’Vunnǝ, "language from the abyss"), a descendant of Veda spoken by Lokheim. It has its own alphabet called Oz ("blade").

The scripts were only made for promotional purposes, none of them were used in the game.