Falling Sand Game
If you don't know what to do, read the Answers.com article on how to play. The game involves four different particles falling
from the top of the screen, which all look and move similar to sand. The particles resemble sand, water, salt,
and oil in color. Along with these four, additional elements can be placed on the screen with the mouse, some
that are solid and stationary instead of flowing. By mixing the different elements together, many colorful
designs, complex structures, and systems can be created.