GoalPlace all objects from the inventory on screen. Touch all the targets (usually highlighted in red) and keep them in balance for 15 seconds. In some levels, the object will have a delay to activate as this will allow you to build more complex structures.
Mouse ControlsLeft click the inventory to select an object, then left-click to place it on screen. Use mouse wheel to rotate the object.
Touch Screen ControlsTouch to select an inventory object. Touch and hold on screen, then move around. With another finger, touch and hold, then move it up and down to rotate the object. Release the touch to place the stone.