The human language, High Valyrian.The language of those who came before, High Speech.
That was the elvish language, Quenya.
From J. R. R. Tolkien's Lord of the Rings book series.
That was klingon, the language of the Klingons.
From Star Trek.
That was the language of the Dothraki.
The Dothraki language was developed for the HBO show Game of Thrones, based on the George R.R. Martin series of the same name.
Sith, language of the Dark Jedi.Aklo, language of the Old Gods.
That was Aklo, language of Cthulu and his Old Gods
That was Mando'a.
Language of the Mandalorians, like Boba Fett, from the Star Wars films.
That was Newspeak.
The language of the dystopian future from George Orwell's Nineteen Eighty-Four.
That gibberish-like language was Simlish!
The language spoken by the Sims from the game series of the same name.
That was the Na´vi language, best expressed in the immortal font of Papyrus.
Na´vi was developed for James Cameron's Avatar, who took the time to create an entire language, and then expressed it with the garbage font Papyrus.
That was Parseltongue, the language of snakes.
Parseltongue was developed for the Harry Potter series of books and films.