What is the smiley face Minesweeper?

What is the smiley face Minesweeper? GUI: The smiley face at the top of the screen represents the state of the game and can be clicked to start another game. The number to the left of the smiley face starts off as the number of mines on the board. As you flag squares, the number decreases; as you unflag squares, it increases.

GUI: The smiley face at the top of the screen represents the state of the game and can be clicked to start another game. The number to the left of the smiley face starts off as the number of mines on the board. As you flag squares, the number decreases; as you unflag squares, it increases.