Instructions
(scroll down for the game)

The object of Minesweeper is to find all the mines as quickly as possible without uncovering any of them. You can uncover a square by clicking it. If you uncover a mine, you lose the game.

If a number appears on a square, it indicates how many mines are in the eight squares that surround the numbered one. To mark a square you suspect contains a mine, right-click it.

When you have marked all mines around a numbered square, you can quickly uncover all empty squares around it by clicking that square with both mouse buttons. If not all mines touching the square are marked, the uncovered touching squares will flash.