hi, please another Dark mode is better for the eyes hi, bitte noch ein dark mode ist schöner für die Augen

How many levels are there?

Personally I wish it was more "solve this preset board" rather than "infinite random boards" but it's still quite interesting. Any chance for achievements in the future? Finish 10, 20, etc. games of each size, that kind of thing? (Also just thinking about it... a hexagon or triangle grid version of this might be even trickier, because with a diamond or dihex there are three possible orientations, so the numbers could be 1-2-3.)...