Sand piles on the playing field crumble in a chain reaction from the addition of new grains in the Dunefall puzzle. Add one grain of sand per turn to the selected slide, so that when four elements are accumulated, it scatters to adjacent cells, without losing extra grains over the edge of the board, and touches all the golden rings. Meet the strict tap limit on five progressively more difficult dunes, use undo on mistakes and turn all the rings green in the addictive game Dunefall.
