Fictional languages are constructed languages created as part of a fictional setting, for example in books or movies. Fictional languages are intended to be the languages of a fictional world and are often designed with the intent of giving more depth and an appearance of plausibility to the fictional worlds with which they are associated, and to have their characters communicate in a fashion which is both alien and dislocated.

Some of these languages, e.g., in worlds of fantasy fiction, alternative universes, Earth's future, or alternate history, are presented as distorted versions or dialects of modern English or other natural language, while others are independently designed conlangs.

A number of scripts have been devised - eg in Thomas More's Utopia.

More information on the Wikipedia page [1]: the list of fictional languages is at [2].