You know how in fantasy worlds, its all english? Kinda breaks the immersion a bit. I wanna find something where they make it as realistic as possible, and make everything in a fictional language, basically using subtitles as the main way to understand the plot.
EverQuest 2 has languages that you can learn and also use in chat.
First thing that comes to mind is the video game Tunic, where the objective of the game is to decipher the language.
Secondly, Stargate (the movie) while not entirely or majorly in a fictional language, the alien characters speak their own language consistently, and part of the plot involves how they communicate. In the TV show they forego of that because it would be a pain to have new languages every episode, so you do have to suspend your disbelief for that, but the movie is golden in that regard.
Then there’s other stuff like Sims or Shadow of the Colossus where everything is in made up languages but it has no impact in the plot or mechanics.
The Panzer Dragoon series, except for Saga which is only partly in the fictional language.
As far as video games go, an obvious answer is the Sims.
Perhaps only slightly less prominent is Shadow of the Colossus. Insofar as I know all of the spoken dialog is a nonsense fictional dialect that definitely isn’t Japanese, except possibly when calling your horse’s name. The language is based off of syllables and random bits from both Japanese and Latin with some of the syllables being spoken backwards, and with a kinda-sorta Japanese style cadence. But it’s utter gibberish, and only the subtitles make it intelligible.
I think Ico and Last Guardian from the same company use the same language
Star Trek and Game of Thrones have some lines in their fictional languages (Vulcan and Klingon for Star Trek, High Valyerian for Game of Thrones).
The games Out There and No Man’s Sky feature a mechanic where aliens talk in a completely unknown language, but as you gradually learn the language, the subtitles gradually become more and more English.
You covered all kinds of media but music, but Enya sings in a made-up language, but not exclusively. Just five songs are in Loxian, a language her songwriter made up for her after she did the song from Lord of the Rings (with some lyrics in Elvish or whatever the Tolkien language is). So she wanted a language that would suit her style and her songwriter made one for her.
The cool thing is, they wrote this whole sci-fi backstory for it about how the Irish go to space, to the moon, and they jump to a faraway galaxy. Also, Enya only sings the water dialect of Loxian — they have a dialect for each of the four natural elements.
The Enya songs in Loxian are:
- Less Than a Pearl
- The River Sings
- Water Shows the Hidden Heart
- The Forge of the Angels
- The Loxian Gate
The first three are on the album Amarantine; the last two are on Dark Sky Island. IMO Loxian Gate is the best of the lot, followed by The River Sings. If you listen on Apple Music or something that, you can watch the lyrics go by as she sings them, but it will not translate them. There are translations online, though.
NiGHTS into Dreams has its dialogue written entirely in a made up “dream language”, and that’s when it has dialogue at all. The sequel ditched this angle entirely though.
It isn’t fully in a unique language, but Nell was pretty famous at the time for the weird language Jodie Foster spoke in for…most of the film?
Öxxö Xööx makes all of his stuff in his own language
The movie Incubus is entirely in a constructed language.
The game Chants of Senaar is built around languages you slowly translate/‘learn.’
Watched a good ten minutes of Incubus. I speak a couple Latin and Germanic languages, and it sounded like a weird mix of European languages. Could definitively understand some of it.
It’s in Esperanto!
If you count text boxes, not having anybody speaking the language, and having to piece together the language based off of context clues and guessing if need be, Chants of Sennaar might work.
Other than something like that, I personally cannot think of any other work that does what you describe.
Lol the sims, which also is a completely learnable language.
But no, probably other better ones listed here.
Stray uses its own language. Your robot friend just translates it for you.
Sigur Ros is a band that sings in a fictional language, I’m pretty sure. Not totally what you’re asking for but certainly in the spirit
The original Stargate movie did that, though I don’t think it’s a majority of the dialogue.
There are plenty of things in “Dutch”, a fictional language based on the Netherlands.
It’s a real language, it’s just German spoken by a person with a head injury /s