This is a fun idea! A few things that I'd like to see:
- If I fail, give me the option to close the game-ended menu so I can see where I went wrong
- Part of the slow-feeling of the game comes from how many additional clicks it takes to do regular minesweeper things. Ideally, I'd like to be able to place flags (and cycle them on to question mark and off) by right clicking a square and I'd like to be able to move quickly to a square by, say, double-clicking it. The left click menu is necessary for accessing the tools, but it shouldn't have to become the primary mode of interaction for the game.
- Numbers can be almost impossible to read if they land over certain types of vegetation