Minesweeper 99

Minesweeper 99 is a take on Minesweeper with classic and new difficulties, shields that can protect you from mines you trigger by mistake, and online leaderboards for fastest times and highest scores.

Game modes

Classic difficulties have no shields and use the original game’s format:

• Classic Beginner: 8×8 grid, 10 mines and 3BV of at least 3.
• Classic Intermediate: 16×16 grid, 40 mines and 3BV of at least 30.
• Classic Expert: 30×16 grid, 99 mines and 3BV of at least 100.

The new difficulties add shields:

• New Beginner: 11×9 grid, 15 mines, 3BV of at least 5 and 3 shields.
• New Intermediate: 12×10 grid, 20 mines, 3BV of at least 10 and 2 shields.
• New Expert: 13×11 grid, 26 mines, 3BV of at least 16 and 1 shield.
• Nightmare: 15×12 grid, 40 mines, 3BV of at least 25 and 1 shield.

Board play

You clear blocks to reveal numbers from 1 to 8, each showing how many mines are hidden in the surrounding blocks. If you reveal a mine while you still have an unused shield, you can continue playing. You can flag a block you believe contains a mine, use Chord by clicking a revealed number with either mouse button, or reset the board with the R key.

Statistics and leaderboards

The game tracks Minesweeper statistics including 3BV/s and IOE (Index of Efficiency). Online leaderboards show the best times and highest scores across all difficulties.