SURVEY THE GROUND · MARK THE HAZARDS · DON'T HIT A PIPE
You're the site surveyor. Clear every safe square of ground without striking a buried hazard. Numbers show how many hazards touch that square. Mark suspected hazards with a flag.
Beat the clock. Top times go on the leaderboard.
You're the site surveyor. Somewhere beneath the plot are buried hazards — gas mains, water pipes, live cables, sewers, ancient bones. Clear every safe square of ground without striking one.
When you survey a square, it shows a number from 1 to 8. That number is how many hazards are buried in the eight squares immediately around it.
If a square has no hazards next to it, it opens blank — and we automatically open all its blank neighbours too. This is how you clear big areas fast.
If you're sure a square hides a hazard, flag it so you don't click it by accident. Flagging doesn't open the square — it just marks it.
LEFT CLICK to survey a square · RIGHT CLICK to flag
On mobile: tap to survey, long-press to flag
You win the moment every safe square has been surveyed. You don't have to flag every hazard — just avoid them. Your time is your score, so be quick but be careful.
The 3 below means three of its eight neighbours are hazards. Two are already flagged ⚑, so the third must be the unrevealed square — flag it, and the rest are safe to survey.
Your first click is always safe — hazards are placed afterwards, so you can survey freely to begin.
Need to take a call? Hit SPACE or the PAUSE button. The board is hidden and the timer stops. No peeking.
WORK CALL? NO PEEKING.
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