The latest game I recall buying is a game called "Raik", which a visual novel that changes between the English and Scots languages (a tiny little bit like Go Go Nippon did with Japanese and English, if you've played that), and it works really well. I could've got it for free, but I decided to pay a little to support the developer.
I suppose after all, with the need to know 2 (albeit very similar) languages, one of which is rarely if ever taught in any school and next to no language materials/courses support it, I imagine the potential audience is going to be very small...
Then again, most of you might be able to understand most of it anyway, since both languages are very similar, a seemingly popular English-only site/blog (indiegames.com) had it featured, which has to mean something, right?
http://aitch-giles.itch.io/raik