Operate magic cannon and collect gems in a mouse-controlled game with realistic physics.

Use the mouse to aim and fire.
Click and hold to increase shot's power.
Try to bring down as much gems as you can using maximum 5 shots per level.
Each collected gem gives you +1 point.
Earn level's minimum score (or more) to complete level. Less spended shots gives you more score per level.
Avoid bad gems with skull mark (-1 point).
Complete all 20 levels to submit total score.