The idea is to occupy the Plateau with as many of your gems as possible, you do this by moving your gems into the empty pods. You can choose to play against the computer, or against another human opponent. There are two types of moves, a jump or double, indicated when your piece is selected. Entering into a hexxagon occupied by an opponent's piece will transform them into yours.
Use the left mouse button to click on the gems. The gem will spread an outline on the Plateau, an arrow is shown as you move over the gems. Jump or move the gems within the outline to make a move.