Very high quality presentation. A low amount of content, and almost no unique game overs, as all of them share the same outcome. But it was a Game Jam submission, so that's to be expected. There's a lot of promise here if the project were to be continued.
One thing: I solved the mine puzzle on accident. Instructions unclear, and I definitely could not do that again. I'd recommend having some way to get the actual answer outside of trial and error, though I can't say how you'd go about doing that without an external guide (which I understand is a bit of a cop-out).