Minesweeper
Calm • Focus-friendlyFive board sizes, a first click that is always safe, chording, flag mode, timer + personal bests, and local saves.
Choose a board
Bigger boards take longer, not just more care. The percentage is how much of the grid is mined.
Easy
The classic beginner board. A gentle place to learn the patterns.
9×9 · 10 mines · 12%
Medium
RecommendedA step up in size without a jump in danger.
12×12 · 22 mines · 15%
Hard
The classic intermediate board — the standard benchmark.
16×16 · 40 mines · 16%
Expert
The classic expert board. Wide, dense, and unforgiving.
30×16 · 99 mines · 21%
Master
The largest board here. A long, sustained solve.
30×20 · 130 mines · 22%
Play Minesweeper Online on Gridcore
Minesweeper is a game of deduction, not luck. Every revealed number tells you exactly how many mines touch that cell; from there the board is a chain of small, provable steps. Gridcore’s version keeps the rules intact and removes the friction: your first click is always safe and always opens a region, flags can be placed by right-click, long-press or a flag-mode toggle, and the whole board is playable from the keyboard.
- Open a cell to see how many mines touch it.
- A cell with no adjacent mines opens its whole region for you.
- Flag the cells you have proved are mines.
- Click a number that already has all its flags to open the rest of its neighbours at once — chording.
- Clear every safe cell to win. Open a mine and the round is over.
Prefer numbers to mines? Try Sudoku on Gridcore.