To move around in the game, use your mouse to aim in the direction you want to go, and then click to hop along that path. The goal is to collect all the small gems and use them to obtain the big diamond. You can jump up and around corners, but you can only jump straight up if there is a narrow platform above you. To give yourself a boost, try pushing boxes around the level. If you need to undo a move, click the undo button, and if you want to start the level over, click the reset button.