I love this demo. I'm a huge fan of minesweeper type games. My only complaint is that I'm not liking to controls at all. I dislike having my cursor/target be so restricted, feel like it'd feel a lot smoother if we could just target any tile adjacent to us regardless of where the character is facing. It feels bad when I want to mark a tile diagonal to me and I have to move over a tile and only then will it be targetable. A little more freedom in the flagging and targeting system would go a long way here I feel.