Your aim in this online game with realistic physics is to operate magic cannon and collect gems. Try to bring down as much gems as you can using maximum 5 shots per level. Use YOUR MOUSE to aim and click LEFT MOUSE BUTTON to fire. Click and hold the button to increase shot's power. Each collected gem gives you +1 point. Avoid bad gems with skull mark (-1 point). Earn level's minimum score (or more) to complete level. Have fun!