This game is absolutely amazing and I love it, but I have a couple notes.
The pacing could be more optimal - right now, you get a new thing after every level; it'd be better if you had more chances to familiarize yourself with one thing before getting another, let's say 2-4 levels in-between, with a varying amount of mines. I've played this game so many times it's not a problem anymore, but it was tough to figure out Cryomines at first, for example. Same for upgrades, when you replay, it's tough to remember what you have or don't have.
Dark mines could get an update to help with them, right now unless you get lucky, there's not much to do about them.
Endless mode would be great!! Esp. if you could also pick what mines/structures appear.
Otherwise I ABSOLUTELY ADORE everything about this, it's a better version of mine sweeper, all of the mines and structures are incredibly cool and creative. Sent and shown to all my friends who like Minesweeper lol.