Clear away all the shapes. In each level you have a certain number of clicks at your disposal, so use them efficiently! Adjoining shapes with equal colours can be cleared away in one single click. Shaded shapes are blocked so they can't be cleared away. Normal shapes react to gravitation. Shapes with an arrow inside move into a different direction (indicated by the arrow) when an adjoining shape is cleared away. The order in which you click determines whether you'll complete the the level or not.
Click on the shapes that you want to remove.