Oh wow, this is good :-)
1:35.1 on my 2nd attempt.
I love how it’s embedded in the itch page, like it’s floating. Also all the (other) little details that are in there, like that the sun reacts to win/loss conditions, and the way the tile pops a little on selection.
About the only suggestions I have at the moment is ‘auto win’ if there are exactly fifteen tiles left, even if you haven’t flagged them yet. (EDIT: I originally though this didn’t have a retry on win, but you just have to click…)