This is a classic game known as Minesweeper where the goal is to clear the play area of safe squares. If a square with a mine is clicked, the game ends. Left click reveals a square (safe or mine) and right click adds a flag to square which prevents accidentally clicking on it. Empty squares will reveal all adjacent empty squares and border squares just like in the original game. Also clicking on an already revealed square will reveal adjacent squares if there are a right number of flags around it. This will fail the game if flags are in incorrect positions. The number on the top left shows how many mines there are left and the number on top right shows how many safe squares are unrevealed. The spinbox on the top can be used to adjust the amount of mines.
