Uncover every square without a mine to win. A number shows how many mines are in the eight surrounding squares. Hitting a mine ends the game.
The first cell and its neighbors are safe. Ranked daily challenges start at the center, share one layout for all players, and are verified solvable without guessing.
Right-click or use flag mode to mark mines. Click an open number when its adjacent flag count matches to uncover the other neighbors. Incorrect flags can cause you to hit a mine.
Undo is available in practice, but not daily challenges. Each game lasts up to 30 minutes. Separate random practice boards may require guessing.