Incredibly fun, scratched a very specific itch in my brain. The difficulty curve is perfect and nothing seems unfair. The game seems to be consistently beatable without being too easy. Dark mines are a bit iffy, but they force good resource management which I like conceptually. They never ended a run for me so I don't hate them.
Only issue I saw is that if you hover over the ultimine in the top right on level 10, it tells you what it does before the "analysis." Other than that the game seems flawless.
Amazing work, very excited for endless mode!
Thanks for the detailed feedback, it's great to hear that it scratches that specific itch haha. I definitely wasn't expecting this to resonate so much with people, and it's a big motivation boost to make more.
Good catch on the ultimine description - was planning to change it, but now I've seen a couple playthroughs where that tooltip avoids a *lot* of frustration from people getting there for the first time. Might just leave it as a "hey if you're paying attention here's some bonus info" kind of thing.