Tsolyáni is one of several languages invented by M. A. R. Barker, developed in the mid-to-late 1940s[1][2][3] in parallel with his legendarium leading to the world of Tékumel as described in the Empire of the Petal Throne roleplaying game, published by TSR in 1975.
[4] It was the first constructed language ever published as part of a role-playing game[citation needed] and draws its inspiration from Urdu, Pashto, Mayan and Nahuatl.
Another close borrowing is from the Nahuatl word tlatoani, referring to a leader of an Aztec state (e.g. Montezuma); it is similar to the clan-name of the Tsolyáni emperors, Tlakotáni.
[4] Each letter in the Tsolyáni Engsvanyáli script now has a name—each consonant is surrounded by a coordinating vowel: labials in u-u, dentals in a-a, apicals in i-i, laminals in e-e, velars in o-o-, and the remaining (uvulars, glottals, ...
Sunúz is an obscure language, used for sorcerous purposes; it contains terms to describe movement in a supposed six-dimensional multi-planar space, something of use to the fictional beings who visit the other planar realms where demons live.