StonePress

Press one finger on the stone in the center of the screen and use touch pressure (or touch area if the device has no pressure sensor). Integrity drops only when pressure stays inside the valid band. Too little force does nothing; too much force numbs the hand for 1.5 seconds, blocks pressing, and lets the stone slowly recover. Crush integrity to 0 before the timer runs out to clear the layer. Each clear makes the stone harder, shortens the timer, and tightens the pressure cap. Three timeouts end the run. Score equals clears times 100, plus remaining time times 10, plus a precision bonus. Tap PLAY to start and RESTART to play again.