A crystal grows from below, one colored shard at a time. Swipe a line to cleave straight through it.
Any pure-color vein your cut crosses shatters for score — bigger veins pay far more. But a shard left too long calcifies into stone you can't cut; stone only crumbles when you shatter a vein beside it. Keep cutting, or it buries you to the ceiling.
swipe / drag cut P pause
swipe to cut ❙❙ pause
OVERRUN
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PAUSED
press P to resume
Swipe to cut the crystal in a straight line. A pure vein (one color, 4+ cells) your cut crosses shatters for score — one clean diagonal can take several at once for a combo. Shards left too long calcify into uncuttable stone (it only crumbles when an adjacent vein shatters), so you must keep the crystal turning over. Grow a vein big before you cleave it — the gamble pays, but greed calcifies.