How to play
- 01
Select difficulty
Simple is 9 columns× 9 rows, 10 thunders; Medium is 16 columns× 16 rows, 40 thunders; Hard is 16 columns× 30 rows, 99 thunders, using a narrower, taller board. The first click and the eight squares around it guarantee no thunders.
- 02
Flipping frames and flag placement
Click the grid to flip open. The number indicates the number of mines in the surrounding eight squares; The blank square will automatically expand. Right-click, long press on your phone, or switch to flag placement mode and then tap to plant or cancel the flag.
- 03
Consecutive openings
If a corresponding number of flags are inserted around a flipped number, clicking that number will open the remaining adjacent cells at once. If the flag is inserted incorrectly, you may still step on a landmine.
These rules match the version played on this site.
Winning and losing
- Open all non-Thunder squares to win.
- If you step on a landmine, the game ends.
Game controls
- Select difficulty and click the grid to start; You can long-press to plant flags on your phone, and the hard mode uses a vertical layout of 16 columns and 30 rows.
- You can restart, view the timer, and switch or turn off background music.