The objective in Twintower
is to build as tall of a structure as possible on both sides of the balance by using blocks that fall from the sky. Stacking too many blocks on one side of the balance will cause everything that you have built to collapse. Use the mouse to move the balance around, and right-click to save a screenshot when your end level results are displayed.
The level ends when the player manages to stack a yellow brick on both sides. These bricks are easily identifiable by the red flag on top of each, but will only appear when you have stacked the blocks up to a certain height.