GoalFill rows and columns to clear blocks and score points
Place a block
Click or tap to place a block on the board
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Complete lines
Fill entire rows or columns to clear them
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Manage frozen cells
Clear frozen cells twice to remove them
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Use lightning bolts
Get 2 bolts on same line to clear it instantly
↺Board fills up; harder to find valid placements
Game overBoard becomes completely full with no moves left