How it works

• Left click reveals, right click flags. On a phone, tap to reveal and press and hold to flag. FLAG MODE swaps the two — the hold (or right click) is always the opposite of the tap, so you never lose access to either. Click a satisfied number to open everything around it.
• Walkers enter on the blue column and head for the green one. They prefer ground you've already cleared and won't cross a flag — so flagging isn't note-taking, it's building the road. (Wall them in completely and they'll take their chances rather than stand still.)
• Each one picks its own line and won't stray far from where it entered, so you can't just clear one lane and win.
• There's kit buried in the field. Clear the ground above it and you keep it: MINE SCAN flags every mine in a 5×5, and AIRLIFT calls a helicopter that lifts everyone near the spot straight out. Click the button (or 1 / 2), then click where you want it.
• If one steps on a mine it goes off, and takes anyone next to it. The mine is spent — the crater is safe, and every neighbouring number drops by one.
• Set one off yourself and you don't lose the run, but for a second and a half your clicks do nothing while they keep walking.
• Same seed = the exact same board and the same arrivals. Send a friend your seed and you're racing the identical map.

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