That's the idea behind Parley.
https://www.tomedes.com/games/parley
We show two AI translations of the same sentence.
You pick the one you'd actually say.
That's it.
People end up learning without realizing they're learning, which feels like the best kind of learning.
Would love to know your first impression. What's missing?
The mechanic is simple, which is good.
My first impression: the strongest part is not really “AI translations” or even the game layer. It is that Parley trains people to recognize what sounds natural in real conversation.
That is a sharper promise than generic language learning, because most learners do not only struggle with vocabulary. They struggle with sounding human instead of technically correct.
I’d probably frame it more around “learn the version a native speaker would actually say” rather than “pick between two AI translations.”
What may be missing is a stronger progression loop. After someone chooses the better translation, show them why the other one feels unnatural, then let them build a streak around real-world phrasing.