Trying my best to balance the game towards all kind of players, so it's normal for it to be easy for more seasoned minesweeper players :')
Did you also try hard mode? Its presence may not be very obvious UI wise lol
Yeah, this was hard mode.
But I imagine this is a tough game design issue to solve. Basic minesweeper has a 'one-mine-and-you're-dead' design, and even with that and the occasional 50/50 a good player can solve most fields most of the time.
Relics, artifacts and health all make it easier to get through the game, so they are an excellent way to scaffold the learning and get newer players going. I really think you are doing a great job with making this system powerful and interesting.
However, making the basic game harder is way more difficult, especially without breaking the fundamental joy of the puzzle, or the ability to solve it at all.
I think you're on the right track with the curses, but only a few tap into the basic setup of the game (limited vision or more damage might be a hindrance, but the game is the same). I think the 'let's remove some tiles' works best, in that it forces a veteran player to reassess otherwise familiar setups.
Maybe you can think of more curses (or just variations of the base game) in that line?
Let me brainstorm some ideas (not yet filtered for quality or practicality):
You probably have thought of many of these already, but I just liked doing a quick game dev exercise for myself ;)
Have fun with development!