Nice! To be honest, it started kind of slow, but just a couple minutes in it really snowballed and I was dropping mines left and right. I got pretty hooked by that point and soon enough I got all the tiles!
Just a really minor nitpick, I think the tutorial text could've used a different color. The cyan blue is a bit hard to read against the background (maybe an outline around the font?) Oh and it'd be pretty cool if I could zoom out and admire the full map for a moment. But overall, nice game! Had a great time.