The object of the game is get the Rocks to pass through the gates to the bottom. Each
rock which makes it to the bottom will increase your score by one. Enter the rocks in the
top green starting lanes by clicking in the green lane you wish to start with. You and the
computer will take turns adding rocks to the board. If two or more rocks fall through to
the bottom in a single turn, the player gets another turn. You can change the setting to another level to make it
harder or easier---have fun!!