It's one of the best I've played at the jam so far. I like how you've built the UI, the artwork and the font you've chosen, and that together with the music creates an interesting atmosphere for the game. I also liked the gameplay and how you integrated the game with the minesweeper concept.
One possible problem is that I think a lot of people have difficulty playing minesweeper, and maybe if they don't know the rules, they might struggle with this game. But as I've always liked minesweeper, it wasn't a problem.