Minesweeper is one of the most enduring logic puzzles ever designed. You're shown a grid of covered cells. Beneath some of them sit mines. Your job is to uncover every cell that isn't a mine, using only the information the grid gives you. Reveal a mine and the game ends. Reveal all the safe cells and you win.

🖱 Revealing Cells

Tap or left-click any covered cell to reveal it. Your first click is always safe — the mines aren't placed until after you start, and they're laid down avoiding your first cell plus its eight neighbours, so you always open into a useful pocket. If you reveal an empty cell with no neighbouring mines, the board cascades open automatically, sweeping outward until it hits cells that touch a mine.

🔢 Reading the Numbers

Every revealed cell that touches one or more mines shows a number from 1 to 8 — that's exactly how many of its eight neighbours are mines. A "1" next to a single covered cell means that one cell is a mine. A "3" with exactly three covered neighbours means all three are mines and the rest are safe. Most of the game is chaining these deductions: every number you reveal constrains the cells around it.

🚩 Flagging Mines

When you've deduced that a cell is definitely a mine, mark it with a flag. Right-click on desktop or long-press on mobile to plant a flag. Flagged cells are protected from accidental clicks. Prefer tapping to flag? Hit the 🚩 Flag Mode toggle in the toolbar — every tap then places or removes a flag instead of revealing. Long-press still flags whichever mode you're in.

⚡ Grid Sizes & Difficulty

Two independent dials let you tune the challenge. Pick a grid size from 5×5 up to 11×11, then set a difficulty from Beginner through Cyborg ☠. The difficulty controls mine density: Beginner spreads mines lightly (about 10% of cells), Medium runs at classic-Minesweeper density (~16%), and Cyborg packs them at 30%. Want to go further? Hit ⚙ Custom to dial in any rows, columns, and mine count up to 30×20 — full Expert-style boards and beyond.

Play Minesweeper free online — no download, no sign-up. Minesweeper is a browser-based logic puzzle that runs on any device. Work through 7 difficulty tiers across 7 grid sizes, build a board to your exact spec with Custom mode, take on the seeded daily challenge to grow your streak, and share your fastest clear with the challenge link.

The daily challenge resets every midnight and is the same board for every player worldwide on that date — beat the grid faster than your friends and you'll have the receipt to prove it. Your best time is saved per grid-size × difficulty, so an 8×8 Hard PB lives separately from a 10×10 Scientist PB and you can chase records on each.

• Start in the middle. Your first click is always safe, and the centre of the grid is more likely to cascade open a big chunk than a corner — corners only have three neighbours, so they rarely chain.
• Trust the numbers absolutely. A "1" touching only one covered cell means that cell is the mine, full stop. Flag it and move on. The whole game is built on these tiny certainties.
• Look for adjacency patterns. When two adjacent numbers share covered neighbours, the difference often tells you where mines must — or must not — be. A "2" and a "1" sharing one covered cell narrow things down fast.
• Flag aggressively at high density. On Scientist and Cyborg difficulty, flagging is essential. Without flags you'll lose track of which covered cells you've already deduced as mines.
• Save guesses for last. Forced guesses do happen at high density. When you must guess, pick a cell touching the fewest unknowns — its outcome reveals the most information.
• Use Custom mode for warm-ups. Building a board with very low mine density (5-8%) is a great way to practice cascade-reading and pattern recognition before tackling Cyborg.