SMALL GRAINS. SURPRISING CONSEQUENCES.
A little sand.
A whole new pattern.
Four grains become a ripple.
One goes north, south, east, west.
Where will yours come to rest?
Make the two gardens match
Tap an outlined cell to add one grain. At four grains, a cell sends one to each of its four neighbors. At the edge, grains fall out of the garden. These ripples continue until every cell has fewer than four grains.
Match every cell in the target within the drop budget. Numbers show grain counts; outlined cells are legal drop sites. Arrow keys select a cell; Enter or Space drops a grain. Undo freely. Nudge reveals a shortest next move. Turn off Auto waves to step through each ripple.
Free garden has no goal: try the center mound or a garden filled with three grains, then watch the avalanche. Progress is saved only on this device.