Falling Sand Game

If you don't know what to do, check this & this. Sample screenshots: Pic-1, Pic-2, Pic-3, Pic-4, Pic-5, Pic-6.
And Tim DeBruine of Craic Wisely wrote and sang this melodious song, titled: "Falling Sand Song" (MP3 format).

[Game found on DOFI-Blog via Fark]
[I, Chirag Mehta, take no credit for creating this game or copyrights thereof. This game is simply for my personal use.]