I like the idea of the quiz, but also see several issues:
1. As far as I see, all of them (except for Breton) are official on a regional level, so it should rather be "top regional" instead of "non-official" languages.
2. The dot for Yiddish is in Bavaria in Germany. That is very confusing. In Eastern Europe, there are many more speakers of Yiddish. The dot should be moved to e.g. Poland or Ukraine or - if possible - to a some small box outside any country, as the speakers are scattered over several countries.
The situation with Yiddish language is complicated because it's used in many countries, so I decided to put a dot where Yiddish originated, which is Germany.
About title of quiz - you are right and I already changed it.
If you would like to stick to Germany as a place for a dot for Yiddish, maybe you should consider moving it somewhere out of Bavaria? There is a Bavarian language (the most distinct across Germany) and I tried every possible combination of Bavarian/Bayrisch/Boarisch and similar before I gave up
I was selecting languages by their ISO-639 code, if a language has ISO 639-1 code then I included it (it's the best way to recognize dialects), Frisian has only ISO 639-2 so i can't include it.
Galician and Basque have the same status in Galicia and Basque country, respectively, as Catalan has in Catalonia, Valencia and the Balearic Islands. They shouldn't be included
1. As far as I see, all of them (except for Breton) are official on a regional level, so it should rather be "top regional" instead of "non-official" languages.
2. The dot for Yiddish is in Bavaria in Germany. That is very confusing. In Eastern Europe, there are many more speakers of Yiddish. The dot should be moved to e.g. Poland or Ukraine or - if possible - to a some small box outside any country, as the speakers are scattered over several countries.
About title of quiz - you are right and I already changed it.