Leaf Buster is loosely based on the concept of Collapse. The left "half" of the playing field has several columns, containing leaves of two or more different colors. The leaves here can't be moved. The smaller right "half" has a single column of leaves. You can get rid of any leaf in this column by right-clicking it with your mouse (up to 12 leaves per level). The number of leaves in the right column is limited! You are to place a leaf from that column onto the playing field to form a group of two or more leaves of the same color. Then these leaves will disappear. Larger the group, more points you get. Your objective is to clear the entire playing field, which can be quite difficult to achieve.